KR20090103413A - System and method for transaction in personal information - Google Patents

Abstract

PURPOSE: A method for dealing with personal information and a transaction system are provided to make the transaction of personal information possible at a reasonable price. CONSTITUTION: A method for dealing with personal information comprises the following steps of: receiving/storing personal information and the market price for the personal information from a personal information supplier; making the personal information supplier become a member(S100); calculating/storing the reliable index and purchasing cost for the personal information(S115); storing the date when the personal information is inputted(S125); and waiting the demand of the personal information(S130).

Description

Personal information trading method and trading system {SYSTEM AND METHOD FOR TRANSACTION IN PERSONAL INFORMATION}

The present invention relates to a personal information transaction method and a transaction system, and more particularly, to a personal information transaction method and transaction system for brokering a person who wants to sell personal information and a person who wants to purchase personal information using a communication network such as the Internet. will be.

Recently, we have illegally disclosed our personal information, such as name, e-mail address, mobile phone number, work, job, work phone number, residential address, residential phone number, work address, etc. Very often they experience what is offered. For example, he or she is receiving a number of advertisements that he does not want, such as loan advertisements, proxy driving advertisements, product advertisements, and credit card advertisements, by telephone, postal mail, or e-mail from a company or an individual who knows nothing at all. In this case, we are not only very uncomfortable that our personal information is being stolen by someone without our knowledge, but we are also afraid of the leak.

On the other hand, a consumer who needs personal information wants to obtain personal information continuously in order to facilitate marketing activities and reduce the cost of marketing. However, at present, the illegal and voice transactions of the personal information are widespread in society rather than the legal and positive transactions of the personal information, and the consumer can obtain the personal information in a negative and illegal manner, ignoring moral remorse. have.

If this situation persists, consumers who need personal information will fall into moral insensitivity, taking for granted the illegal and illegal acquisition of personal information, which causes us to fear that our personal information may leak at any time. You will be overstressed.

The present invention is to solve the problems described above, it is possible to legally and positively activate the transaction of the personal information by reasonably determined so that both the personal information provider and the personal information consumer can understand the transaction price for personal information Its purpose is to provide personal information trading methods and trading systems.

In order to achieve the object as described above, the present invention comprises the steps of: (A) receiving and storing personal information and personal information transaction amount from a personal information provider, and joining the personal information provider as a member; (B) calculating and storing a confidence index and a purchase cost for the personal information, and storing an input date of the personal information; (C) waiting for the demand of the personal information; (D) searching for the personal information using a search expression input from the personal information buyer who has undergone the member authentication process, and providing a search result to the personal information buyer; (E) When the purchase cost for some or all of the search results of step (D) is paid from the personal information buyer, the personal information buyer is notified of the purchase authentication number and the personal information is provided. Storing an offer date; And (F) if a complaint about the personal information is not received from the personal information buyer within the complaint reception period calculated from the date of providing the personal information, pay the personal information provider the amount multiplied by the trust index. And performing the step (F) again; provides a personal information transaction method comprising a. In this case, the purchase cost refers to a cost in which a fee is added to a value obtained by multiplying the transaction amount by a confidence index.

Preferably, the personal information transaction method further includes a personal information update request procedure, wherein the personal information update request procedure, (G) any one of an e-mail address, a mobile phone number and a residential address is calculated based on the date of entry of the personal information Requesting the personal information provider to update the information which has not been updated within the personal information update period, which is calculated as; (H) If the requested personal information is updated within the period defined in step (G), the trust index is calculated and stored again as 1, and the purchase cost is calculated and stored again based on the calculated trust index. And storing the updated personal information and its input date.

Preferably, the personal information update request procedure, if the update of the personal information requested within the period specified in step (G) has not been made, reduce and store the trust index and the transaction amount and notify the personal information provider of the same. And calculating and storing the purchase cost again based on the reduced transaction amount and the confidence index, updating the personal information input date to the notification date, and then performing step (C). .

Preferably, the personal information transaction method, when a request for blocking the provision of personal information to a specific buyer is received from a personal information provider who has undergone a member authentication process, requests the specific buyer to delete personal information and informs the fact. The method further includes a request for blocking personal information to notify the information provider.

Preferably, the personal information transaction method, when a complaint about unauthorized use of personal information is received from a personal information provider who has undergone a member authentication process, requests a user who uses the personal information to prohibit unauthorized use of personal information. At the same time, it further includes a prohibition of unauthorized use to warn and notify the personal information provider of the fact.

The personal information transaction system according to the present invention includes a server connected through a communication network with a terminal of a personal information provider who wants to sell personal information and a terminal of a personal information buyer who wants to buy personal information; And a database connected with the server, wherein the server comprises: a data storage unit storing personal information, personal information transaction amount, and personal information input date received from the personal information provider in the database; A confidence index and a purchase cost calculator configured to calculate a trust index and a purchase cost of the personal information, store the trust index and a purchase cost in the database, and notify the personal information provider of the trust index; A member authentication unit to determine whether the personal information provider and the personal information purchaser are members; Search for the personal information stored in the database and provide the search result to the personal information buyer, provide the personal information to the personal information buyer about the portion of the search result paid for the personal information, and A personal information retrieval unit for storing a date provided in the database; An amount management unit guiding a purchase cost and a purchase cost payment procedure to the personal information buyer, and paying the personal information provider the amount multiplied by the trust index; And a purchase authentication number generation unit generating a purchase authentication number and notifying the purchase authentication number to the personal information buyer.

Preferably, the personal information transaction system further comprises a personal information update request unit, wherein the personal information update request unit, a personal information update period calculator for calculating a personal information update period from the personal information input date; A personal information update request sender requesting the personal information provider for a period of time to update the non-updated information when any one of an e-mail address, a mobile phone number, and a residence address within the personal information update period is not updated; And when the requested personal information is not updated within the predetermined period of time, reduce and store the trust index and the transaction amount and notify the personal information provider thereof, and purchase based on the reduced trust index and the transaction amount. And an index of confidence and a transaction amount reduction unit for calculating and storing expenses, and updating the personal information input date to the notification date.

Preferably, when the request for blocking the provision of personal information to a specific buyer is received from the personal information provider who has undergone the membership authentication process, the personal information transaction system requests the specific buyer to delete the personal information and informs the individual of the fact. It further includes a request for blocking personal information to notify the information provider.

Preferably, when a complaint about unauthorized use of personal information is received from a personal information provider who has undergone a membership authentication process, the user who uses the personal information is requested to ban unauthorized use of the personal information and warned at the same time. It further includes an unauthorized use prohibition request to notify the personal information provider of the fact.

According to the present invention, the personal information provider can directly provide a transaction amount for his personal information, and the personal information buyer can be based on the amount of personal information input by the personal information provider and the trust index calculated by the item. As the transaction amount is paid, the personal information can be traded at a reasonable price that both the personal information provider and the personal information consumer can understand.

In addition, according to the present invention, periodically updating the e-mail address, mobile phone number and residential address of the personal information provider, and if the request is not accepted, a predetermined penalty is imposed on the personal information provider, the transaction The effect is to ensure the reliability of the target personal information.

In addition, according to the present invention, since it is possible to request for the unauthorized use of personal information and the blocking of personal information, the personal information provider has an effect of providing his or her personal information as a subject of a transaction with confidence.

1 is a flowchart illustrating an embodiment of a personal information transaction method according to the present invention.

FIG. 2 is a flowchart illustrating a personal information update procedure, a transaction amount update procedure, and a personal information addition procedure of the personal information transaction method shown in FIG. 1.

3 is a flowchart illustrating a personal information update request procedure of the personal information transaction method shown in FIG. 1.

4 is a flowchart illustrating a personal information blocking request procedure of the personal information transaction method shown in FIG. 1.

5 is a flowchart illustrating a prohibition of unauthorized use of the personal information transaction method shown in FIG.

6 is a flowchart illustrating a complaint processing procedure of the personal information transaction method shown in FIG. 1.

7 is a block diagram showing an embodiment of a personal information transaction system according to the present invention.

8 is a block diagram showing a complaint processing unit of the personal information transaction system shown in FIG.

9 is a block diagram illustrating a personal information update request unit of the personal information transaction system illustrated in FIG. 7.

Hereinafter, preferred embodiments of a personal information transaction method and transaction system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating an embodiment of a personal information transaction method according to the present invention, and FIG. 2 is a personal information update procedure, a transaction amount update procedure, and a personal information addition procedure of the personal information transaction method illustrated in FIG. 1. 3 is a flowchart showing a personal information update request procedure of the personal information transaction method shown in FIG. 1, and FIG. 4 is a flowchart showing a personal information blocking request procedure of the personal information transaction method shown in FIG. 5 is a flowchart showing a prohibition of unauthorized use of the personal information transaction method shown in FIG. 1, FIG. 6 is a flowchart showing a complaint processing procedure of the personal information transaction method shown in FIG. 8 is a block diagram showing an embodiment of a personal information transaction system according to the present invention, FIG. 8 is a block diagram showing a complaint processing unit of the personal information transaction system shown in FIG. 7, and FIG. 9 is an individual shown in FIG. 7. Information trading Updating individual information of the stem portion is also shown a block request.

The personal information transaction method according to the present invention includes receiving the personal information and the personal information transaction amount from the personal information provider 10 and registering the personal information provider 10 as a member (S100). The personal information provider 10 may input the personal information and the transaction amount using a program installed in his computer, and the input personal information and the transaction amount are included in the data storage unit included in the server 20 ( 22). The personal information includes a member ID, a password, a social security number, a name, a gender, a residential telephone number, an e-mail address, a residential address, a mobile phone number, a hobby, a job, a work address, a work phone number, a transaction account number, and the like. The transaction amount means an amount that the personal information provider wants to receive when trading the personal information provided by the personal information provider.

When the step (S100) is performed, the confidence index for the personal information is calculated and stored in the database 60 connected to the server 20, and is notified to the personal information provider (S110). The confidence index is initially calculated as 1. In addition, the notification of the trust index is made through one or more means of pop-up window, e-mail, and mobile phone text message displayed on the monitor used by the personal information provider 10. The calculation, storage and notification of the confidence index are performed by the trust index and the purchase cost calculator 24 included in the server 20.

When the step (S110) is performed, the purchase cost for the personal information is calculated and stored in the database (60) (S115). The purchase cost is a cost to be paid by the personal information purchaser 70, and means a cost obtained by adding a fee to the product of the transaction amount and the trust index. The fee is a service cost of the server 20 operator. Calculation and storage of the purchase cost is made by the confidence index and the purchase cost calculation unit 24.

According to the purchase cost calculated as described above, the personal information buyer 70 bears the fee. However, the fee may be borne by the personal information provider 10 differently. In this case, the purchase cost is calculated by multiplying the transaction amount and the confidence index, and the personal information provider 10 is paid a fee in which the fee is limited from the purchase cost.

When the step 115 is performed, the personal information, transaction amount, and personal information input date are stored in the database 60 by the data storage unit 22 (S120 and S125). The personal information input date is a starting point of the personal information update period described later.

On the other hand, it has been described that the steps S110 to S125 are performed sequentially, the steps S110 to S125 may be performed in a different order as described above.

When the step (S125) is performed, the server 20 waits until there is a purchase request of the personal information (S130).

During the execution of the step (S130), if a search expression is input from the personal information buyer 70, which has undergone the member authentication procedure, the personal information stored in the database 60 is searched, and the result is provided to the personal information buyer 70. It becomes (S140). The search expression input by the personal information purchaser 70 through the program installed in his computer is transferred to the personal information retrieval unit 28 included in the server 20, and the personal information retrieval unit 28 ) Searches for the personal information stored in the database 60 by using the search formula and outputs the search result to the computer monitor of the personal information buyer 70. In this case, since the personal information buyer 70 has not yet paid for the purchase, it is preferable that the search results include only a part of the personal information, for example, the purchase cost and the trust index. Meanwhile, the search result may further include any one or two or more of a part of a residential phone number, a part of an e-mail address, a part of a mobile phone number, and a part of a work phone number of the personal information provider 10.

On the other hand, the member authentication procedure is performed by the member authentication unit 26 included in the server 20. Specifically, the member authentication unit 26 compares the ID and password input by the personal information buyer 70 with the ID and password stored in the database 60, and if the values match, the personal information buyer Allow 70 to log in. All of the member authentication procedures to be described later are carried out in the same manner, a detailed description of the member authentication procedure will be omitted below.

After the step (S140), if the purchase intention to the part or all of the search results from the personal information buyer 70 is notified of the total purchase cost and purchase cost payment procedure to the personal information buyer 70 (S150, S160). The purchase intention of the personal information buyer 70 input to the program is transferred to the amount management unit 30 included in the server 20, and the amount management unit 30 searches selected by the personal information buyer 70. After calculating the total purchase cost of the result, the sum and the purchase cost payment procedure stored in the database 60 are provided to the computer monitor of the personal information buyer 70.

On the other hand, if the purchase intention for all the search results of the step (S140) is not notified from the personal information buyer 70, it is preferable that the step (S130) is performed.

After the execution of the step (S160), when the purchase cost guided in the step (S160) is paid, the personal information buyer 70 is notified of the purchase certification number and the personal information is provided, and the personal information providing date is stored (S170, S180). When the personal information buyer 70 pays the purchase cost guided in step S160 through his computer, the purchase authentication number generation unit 32 included in the server 20 generates a purchase authentication number. After the personal information buyer 70 is notified. The purchase authentication number is for proving that the personal information purchaser 70 has purchased the personal information legitimately, and information on the purchase date, the buyer, the purchaser, the purchased personal information, and the purchase cost is stored. The purchase verification number is notified to the buyer of the personal information through an e-mail and a text message on the mobile phone. In addition, when the personal information buyer pays the purchase cost guided in the step S160 through his computer, the personal information search unit 28 sends the personal information selected by the personal information buyer to the computer of the personal information buyer. The information is provided to the monitor or sent to an e-mail address, and the date of providing the personal information is stored in the database 60. The date of providing the personal information is the start date of the complaint reception period described later.

On the other hand, when the purchase cost guided in step S160 is not paid, it is preferable that step S130 is performed.

If the complaint about the personal information is not received from the personal information buyer 70 within the complaint acceptance period after the step (S180), the transaction cost is multiplied by the trust index to the personal information provider 10. This is paid (S190, S200). The complaint reception period is calculated from the personal information providing date as described above, and is calculated in the complaint reception period calculation unit 34a of the complaint processing unit 34 included in the server 20. If the complaint is not received within the complaint acceptance period, the amount management unit 30 reads the confidence index and the transaction amount stored in the database 60 and multiplies them by the amount of the personal information stored in the database 60. Make a deposit to the supplier's transaction account number.

When the step (S200) is performed, the server 20 waits for a purchase request of the personal information (S130).

On the other hand, the step (S150) is different from the above, first, a step of receiving a new purchase cost for a part or all of the search results of the step (S140) from the personal information buyer 70, second, the newly received purchase cost Inquiring the relevant personal information provider 10 by setting a period whether or not there is a willingness to deal with personal information, and third, the results of the inquiry input by the personal information provider 10 within the period of the personal information buyer ( 70) may be provided. In such a case, the personal information buyer 70 may adjust the price for the personal information he / she wants to purchase.

In this case, the period in the second step is set to about one week, and the inquiry in the second step is made through one or two or more of e-mail and mobile phone text message. The inquiry result in the third step is the purchase cost of the personal information provider 10 inputting a positive answer, the confidence index, or a part of the telephone number of the residence of the personal information provider 10 added thereto, a part of the e-mail address. , Part of a mobile phone number, part of a work phone number, or two or more.

On the other hand, after performing the step (S180), within the complaint period, complaints about the personal information from the personal information buyer 70, for example, an error in the e-mail address, an error in the mobile phone number, an error in the residential address, etc. If so, it is desirable that complaints procedures be carried out.

The complaints processing procedure, if the purchase authentication number attached to the personal information buyer 70 when the complaint is legal, notifies the personal information provider 10 and the request for the update of the personal information at the same time, the Subtracting the transaction amount and the trust index and at the same time notifying the personal information provider (S610, S620). When the purchaser of the personal information 70 inputs the complaint details by attaching the purchase verification number through his computer, the purchase verification number verification unit 34b of the complaint processing unit 34 indicates that the purchase verification number is the complaint details. Check whether or not the personal information that is generated at the time of purchase, whether the purchase authentication number is notified to the personal information buyer 70 received the complaint. When the purchase authentication number confirmation unit 34b confirms that the purchase authentication number is legitimate, the complaint contents sending unit 34c of the complaint processing unit 34 uses the corresponding personal information by using an e-mail or a mobile phone text message. Notifying the provider of the complaint and requesting the renewal of personal information, deducting and storing the transaction amount and the trust index by 10%, respectively, and storing the personal information through e-mail, text message, etc. Notify the information provider.

On the other hand, when the personal information buyer 70 is not legally attached to the purchase authentication number attached to the complaint, it is preferable that the re-entry of the purchase authentication number is guided (S650). The step S650 is performed by the purchase authentication number re-entry guide 34d of the complaint processing unit 34. If the re-purchased authentication number is legal, step S620 is performed. If not, the step S650 is performed again.

When the personal information is updated by the personal information update request in step S620, an amount of money multiplied by the deducted trust index is paid to the personal information provider 10, and the updated Personal information is stored in the database 60 by the data storage 22, the confidence index is changed back to 1. The amount obtained by multiplying the deducted transaction amount by the deducted trust index is deposited by the amount management unit 30 into the transaction account number of the corresponding personal information provider 10.

If only the personal information update request in step S620 and the personal information is not updated, the confidence index and the transaction amount are set to 0, and the personal information is excluded from the search target (S660). The step S660 is performed by the personal information deleting unit 34e of the complaint processing unit 34.

The personal information transaction method according to the present invention preferably further comprises a personal information update procedure so that the personal information provider can update their personal information. The personal information update procedure stores the personal information input through the computer of the personal information provider 10 that has undergone the member authentication procedure in the database 60 together with the personal information input date. By doing so.

In addition, it is preferable that the personal information transaction method further comprises a transaction amount update procedure so that the personal information provider can change the transaction amount for his personal information. The transaction amount update procedure, the data storage unit 22 stores the transaction amount input by the personal information provider 10, which has undergone the member authentication process, through his computer, in the database 60, and the confidence index And the purchase cost calculation unit 24 calculates the purchase cost and stores the purchase cost in the database 60.

In addition, the personal information transaction method preferably further includes a personal information addition procedure so that the personal information provider 10 can add their own personal information. The personal information addition procedure, the data storage unit 22 stores the personal information and personal information input date added by the personal information provider 10 that has undergone the member authentication process through his computer in the database 60. By doing so.

On the other hand, since the e-mail address, mobile phone number and residential address of the personal information is essential when the personal information buyer 70 contacts the personal information provider 10, its importance is higher than other personal information. . Therefore, the personal information transaction method preferably further comprises a personal information update request procedure for requesting periodic updates of the e-mail address, mobile phone number and residence address.

In the personal information update request procedure, if any one of an e-mail address, a mobile phone number, and a residential address is not renewed within the personal information renewal period, requesting the personal information provider for a renewal of the unrenewed information by setting a period of time ( S310 and S320). The update period is calculated from the personal information input date stored in the database 60, and is calculated in the personal information update period calculator 36a of the personal information update request unit 36 included in the server 20. If any one of the e-mail address, mobile phone number and residence address is not updated within the personal information update period, the personal information update request sender 36b of the personal information update request unit 36 is not updated. Request the renewal of the personal information provider 10 by setting a period of time. Here, the personal information update period is preferably two weeks for the e-mail address and four weeks for the mobile phone number and residence address. In addition, the update request by the personal information update request sending unit 36b is preferably made through an e-mail and a mobile phone text message.

If the e-mail address, mobile phone number and residence address are updated within the period by the renewal request in step S320, the trust index is again calculated and stored as 1 and notified to the personal information provider (S110). Thereafter, the steps S115 and S125 are performed (S330).

On the other hand, if the e-mail address, mobile phone number and residential address is not updated within a predetermined time period in the step (S320), the confidence index and the transaction amount is reduced and stored and at the same time the confidence index and the transaction amount are reduced. The information provider is notified (S350), the personal information input date is updated to the notification date (S350), and the step (S115) is preferably performed. In this case, the confidence index and the transaction amount is preferably reduced by 10%, respectively, and the notification of the reduced trust index and the transaction amount is preferably made through an e-mail and a mobile phone text message. Reduction, storage and notification of the confidence index and transaction amount, and update of the personal information input date are performed by the confidence index and transaction amount reduction unit 36c of the personal information update request unit 36.

Some of the personal information buyers may provide illegal advertisements to the personal information providers using the personal information purchased by them. Accordingly, the personal information transaction method preferably includes a personal information blocking request procedure to prevent such a phenomenon.

The personal information blocking request procedure, when a request for blocking the provision of personal information to a specific buyer 70 is received from the personal information provider 10 that has undergone the membership authentication procedure, the personal information included in the server 20 Blocking request unit 38 is performed by requesting the specific buyer 70 to delete personal information and notifying the personal information provider. The deletion request of the personal information, the notification of the deletion request is preferably made through an e-mail and a text message on the mobile phone. If there is only a request for deletion of the personal information and the illegal advertisement is continuously performed, the personal information provider 10 may notify the server 20 operator of the fact online or offline. The server operator may take legal action against the particular buyer 70.

The personal information buyer 70 should attach the purchase certification number when sending the advertisement using the personal information purchased by the personal information buyer. Accordingly, the personal information provider 10 may check whether the personal information purchaser 70 has legally purchased the personal information by checking the purchase authentication number attached to the advertisement e-mail or the mobile phone text message. If the purchase authentication number is not attached to the advertisement e-mail or the mobile phone text message or an inappropriate purchase authentication number is attached, the personal information provider 10 prohibits the unauthorized use of personal information to the personal information buyer 70. As it is necessary to request, it is preferable that the personal information transaction method further includes a prohibition of unauthorized use.

The unauthorized use prohibition procedure is, when a complaint about the unauthorized use of personal information is received from the personal information provider 10 that has undergone the membership authentication procedure, the unauthorized use prohibition request unit 40 included in the server 20. By requesting the unauthorized use of the personal information to the unauthorized use of the personal information at the same time the warning measures and notify the fact that the personal information provider. The unauthorized use prohibition request and warning action, the notification of the prohibition request and the fact of the warning is preferably made through the e-mail and text message. If there is a request for prohibition of unauthorized use of the personal information and a warning action, and the advertisement is continued without the purchase verification number attached or an inappropriate purchase verification number attached, the personal information provider 10 notifies the fact online. Alternatively, the server 20 operator may be notified offline, in which case the server operator may take legal action against the personal information purchaser 70.

Claims (10)

(A) receiving and storing personal information and transaction amount of personal information from a personal information provider, and registering the personal information provider as a member; (B) calculating and storing a confidence index and a purchase cost for the personal information, and storing an input date of the personal information; (C) waiting for the demand of the personal information; (D) searching for the personal information using a search expression input from the personal information buyer who has undergone the member authentication process, and providing a search result to the personal information buyer; (E) When the purchase cost for some or all of the search results of step (D) is paid from the personal information buyer, the personal information buyer is notified of the purchase authentication number and the personal information is provided. Storing an offer date; And (F) if a complaint about the personal information is not received from the buyer of the personal information within the period of receiving a complaint calculated from the date of providing the personal information, pay the personal information provider the amount multiplied by the trust index. Performing the step (F) again; personal information transaction method comprising a. The method of claim 1, The purchase cost is a personal information transaction method characterized in that the sum of the fees multiplied by the transaction value and the trust index. The method of claim 1, (G) If any one of the e-mail address, mobile phone number and residence address has not been renewed within the personal information renewal period in which the personal information input date is calculated as a starting point, the renewal of the non-updated information to the personal information provider. Determining and requesting; (H) If the requested personal information is updated within the period defined in step (G), the trust index is calculated and stored again as 1, and the purchase cost is calculated and stored again based on the calculated trust index. And storing the updated personal information and the input date thereof. The method of claim 3, The personal information update request procedure, If the requested personal information is not updated within the period specified in the step (G), the trust index and the transaction amount are reduced and stored, and the same is notified to the personal information provider, and the reduced transaction amount and trust index Computing and storing the purchase cost based on, updating the personal information input date to the notification date, and further performing the step (C). The method of claim 1, If a request to block the provision of personal information to a particular buyer is received from a personal information provider who has undergone a membership verification process, the personal information block requesting the specific buyer to delete personal information and notifying the personal information provider of the fact Personal information trading method further comprising the request procedure. The method of claim 1, If a complaint about unauthorized use of personal information is received from a personal information provider who has undergone the membership authentication process, the person who uses the personal information is requested to ban unauthorized use of the personal information, and the user is warned. Personal information transaction method further comprises the step of prohibiting unauthorized use of the personal information provider. A server connected through a communication network with a terminal of a personal information provider who wants to sell personal information and a terminal of a personal information buyer who wants to buy personal information; And a database connected with the server. The server, A data storage unit for storing personal information, personal information transaction amount, and personal information input date received from the personal information provider in the database; A confidence index and a purchase cost calculator configured to calculate a trust index and a purchase cost of the personal information, store the trust index and a purchase cost in the database, and notify the personal information provider of the trust index; A member authentication unit to determine whether the personal information provider and the personal information purchaser are members; Search for the personal information stored in the database and provide the search result to the personal information buyer, provide the personal information to the personal information buyer about the portion of the search result paid for the personal information, and A personal information retrieval unit for storing a date provided in the database; An amount management unit guiding a purchase cost and a purchase cost payment procedure to the personal information buyer, and paying the personal information provider the amount multiplied by the trust index; And And a purchase authentication number generation unit generating a purchase authentication number and notifying the purchase authentication number to the buyer of the personal information. The method of claim 7, wherein A personal information update period calculator for calculating a personal information update period from the personal information input date; A personal information update request sender requesting the personal information provider for a period of time to update the non-updated information when any one of an e-mail address, a mobile phone number, and a residence address within the personal information update period is not updated; And If the requested personal information is not updated within the predetermined period, the trust index and transaction amount are reduced and stored, and the same is notified to the personal information provider, and the purchase cost is based on the reduced trust index and transaction amount. And a personal information update request unit comprising: a confidence index and a transaction amount reduction unit configured to calculate and store and update the personal information input date to the notification date. The method of claim 7, wherein If a request to block the provision of personal information to a particular buyer is received from a personal information provider who has undergone a membership verification process, the personal information block requesting the specific buyer to delete personal information and notifying the personal information provider of the fact Personal information trading system, characterized in that it further comprises a request unit. The method of claim 7, wherein If a complaint about unauthorized use of personal information is received from a personal information provider who has undergone the membership authentication process, the person who uses the personal information is requested to ban unauthorized use of the personal information, and the user is warned. Personal information transaction system, characterized in that further comprising the unauthorized use prohibition request unit to notify the personal information provider.