KR20040072059A - Method for automatically blocking spam mail by connection of link url - Google Patents

Abstract

PURPOSE: A method for automatically blocking a spam mail through the connection of a link URL(Uniform Resource Locator) is provided to automatically block the spam mail if a preset spam keyword is present after connecting to a web page by extracting the URL information linked to a received e-mail. CONSTITUTION: The linked URL and a sender address are extracted from an original message of the received e-mail(S12). It is inquired that the sender address is the address registered to a blocking list(S14). In case that the sender address is in the blocking list, the e-mail is removed without reading a body(S34). In the case that the sender address is not in the blocking list, it is inquired that the linked URL is present in a blocking URL list(S16). In case that the linked URL is in the blocking URL list, the reception of the e-mail is refused. In case that the linked URL is not in the blocking URL list, it is inquired that the linked URL is present in a pass URL list(S18). In case that the linked URL is in the pass URL list, the e-mail is stored in a mailbox. In the case that the linked URL is not in the pass URL list, the web page is connected by using the linked URL(S20).

Description

How to automatically block spam mail through link UALEL {METHOD FOR AUTOMATICALLY BLOCKING SPAM MAIL BY CONNECTION OF LINK URL}

The present invention relates to a method for automatically blocking spam mails through a link URL connection, and in particular, extracts URL information linked to a received e-mail, accesses a corresponding web page, and then spams a predetermined spam keyword. The present invention relates to a method for automatically blocking spam mails through a URL link, which can be filtered and blocked automatically.

As is well known, the e-mail system refers to a system for exchanging data or messages with a specific user over the Internet, and the spam-mail refers to advertisements that disregard the receiving party's intentions and spread in large quantities. Refers to e-mail for commercial purposes, such as propaganda and solicitation. More broadly, commercially available advertising information mails against express opt-out, mass mails sent to deteriorate system performance, advertising mail for illegal software that violates program copyrights, adult goods that harm public morals. And advertisement mails such as unhealthy sites and mails that cause fear or anxiety may be regarded as spam mails.

On the other hand, in order to minimize the harm caused by such spam mails, the government has established various and specific restrictions on spam mails in the Act on Promotion of Information and Communication Network Utilization and Information Protection and its sub-laws. It is taking measures to exceed. For example, at the beginning of a spam message, keywords such as "(advertisement)" or "(adult advertisement)" must be displayed. Recipients should install an email with the subject as a subject after installing the spam filtering program. When set to classify as spam, e-mails with this subject are automatically classified as spam. Furthermore, at present, a mail client may set an arbitrary keyword for spam mail filtering so that an e-mail including the set keyword in a subject or body content is automatically classified as spam mail. Hereinafter, such a conventional spam mail blocking method is referred to as a 'self normal method'.

On the other hand, efforts to avoid filtering by spam mails have been further strengthened.In particular, in the case of adult site advertisement mails, links to the homepage URL of an adult site (uniform resource locator) of an adult site are included with only an image in the body under a normal mail title. Many ways are used.

However, according to the above-described conventional technique, since the spam keyword set by the mail client is present in the subject or body of the incoming e-mail, the content of the web page connected to the URL linked to the body content is not checked. As mentioned above, there is a problem in that it is impossible to filter out the modified spam mail.

The present invention has been made to solve the above-mentioned problems, an object of the present invention is to extract the URL information linked to the received e-mail to access the web page, if there is a predetermined spam keyword that is predefined The present invention provides a method of automatically blocking spam mails through a link UAL connection that filters out spam mails and blocks them automatically.

In order to achieve the above object, the automatic spam mail blocking method through the link UAL connection of the present invention is an automatic spam mail blocking method performed in an email system in which a plurality of mail servers are connected through the Internet. Extracting link URL information existing in the message source of the mail; And accessing a web page linked to the extracted link URL information, and classifying the received e-mail as spam mail when a predetermined spam keyword exists in the content of the web page. It features.

In the above-described configuration, when a predetermined spam keyword exists in the content of the web page, the source of the received e-mail is extracted from the message source and stored in the blocked sender list database, and is present in the blocked sender list database in the future. It is preferable to reject the reception of the e-mail from the sender.

Preferably, when there is a predefined spam keyword in the content of the web page, the link URL information is stored in the blocking UEL list database, and the link URL information existing in the blocking UEL list database in the future is included in the original message Reject receive e-mail.

Preferably, when there is no pre-defined spam keyword in the content of the web page, classified as a general mail, and extracts the link URL information from the message source and stored in the pass through URL list database, the future pass through URL The emails contained in the original message are classified as regular mails.

1 is a network configuration diagram of a general e-mail system,

2 is a flowchart illustrating a method for automatically blocking spam mail through a link URL connection according to an embodiment of the present invention;

3 is a view showing a pop-up window of a received e-mail according to an embodiment of the present invention;

4 is a view showing the original message of the received e-mail according to an embodiment of the present invention.

*** Explanation of symbols on main parts of drawing ***

10: own website, 12: mail server,

14 web server, 16 network,

18: mail client, 20: external website,

22: web server, 24: mail server,

30: Internet, 40: personal mail client

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. This embodiment is not intended to limit the scope of the invention, but is presented by way of example only.

1 is a network diagram of a general e-mail system, in which a general e-mail transmission / reception is performed by an e-mail client (hereinafter referred to as a “mail client”) 18 connected to the Internet 30. E-mail server (hereinafter referred to as 'own mail server') 12 or various websites that provide e-mail services outside their own websites, for example, large and small portal sites or ISPs (Internet Service Providers) This may be performed by receiving an e-mail account from a mail server (hereinafter, referred to as an “external mail server”) 24 provided in the website 20.

Its own website 10 has a web server 14 that processes web documents, a mail server 12 and a mail client 18 that are responsible for sending and receiving mail, and a local network 16, for example a LAN or intranet. Is made through the connection. Of course, each external website 20 is also provided with a web server 22 and a mail server 24. In the drawing, reference numeral 40 denotes a personal mail client which accesses the Internet 30 through a telephone line, a cable, a satellite, an ADSL, an ISDN, or the like, mainly in a home or a private office, without having a website of its own. The mail client 40 mainly uses the e-mail service after subscribing to the external mail server 24 to receive a mail account for free. Of course, mail clients 18 belonging to its own website 10 can also subscribe to an external mail server 24 to use an e-mail service.

On the other hand, in the above-mentioned e-mail system, e-mail sent by any originating mail client through the internal mail server 12 or the external mail server 24 is transmitted by SMTP (Simple Mail Transfer Protocol). It is stored after being sent to a mailbox of an internal or external mail server 12, 24 represented by an email address of a receiving mail client. Thereafter, the receiving mail client can access his own mailbox via the Internet 30 and read the electronic mail stored therein. The receiving mail client reads its own e-mail by POP3 (Post Office), which copies the e-mail stored in the mailboxes of the mail servers 12 and 24 to the hard disk of the mail client computer. Protocol # 3: Post Office Protocol for Receiving E-Mail from a Mail Server) and IMAP (Internet Message Access Protocol), which allows e-mail received from a mail server to be stored in a mailbox without having to copy it to a mail client computer. There are many methods such as POP3 and IMAP, which are commonly adopted by internal mail server systems.

Recently, in addition to IMAP, a web mail service has been introduced to store incoming mail on the Internet and allow access from anywhere. In brief description of such web mail, a mail server and a web server are combined services. In other words, the webmail server seen from the mail client has the same form as a general web server. Therefore, the mail client only needs a web browser to access the webmail server, and no e-mail software is required. These webmail functions are provided free of charge by various portal sites and ISPs.

Figure 2 is a flow chart for explaining the automatic spam mail blocking method through the UAL information extraction according to an embodiment of the present invention, the program according to the automatic spam mail blocking method of the present invention (hereinafter referred to as "spam blocking program" ) May be integrated into the internal or external mail servers 12, 24 or installed separately, and in the case of the personal mail client 40 may be integrated or installed separately in the client computer's e-mail software. Put it.

In addition, hereinafter, 'spam keyword' refers to a set of two or more letters frequently used in spam mails. For example, the spam keyword may be used for 'sex', 'orgasm', 'nude', 'porn', 'wild', 'pervert', or the like, which are frequently used in advertisement mails such as adult goods and abuse sites that harm public morals. 'Masturbation' and the like.

As shown in Fig. 2, first, if any e-mail is received in step S10, the spam blocking program performs step S12, which is a web page linked from the message source of the received e-mail (hereinafter referred to as 'link URL'). And e-mail sender's e-mail address (hereinafter referred to as 'e-mail sender').

For example, FIG. 3 is a diagram illustrating a pop-up window of a received e-mail according to an embodiment of the present invention, and FIG. 4 is a diagram illustrating a message original of a received e-mail according to an embodiment of the present invention.

As shown in Figs. 3 and 4, a typical e-mail is divided into a header and a body, and the header includes an e-mail sender (sda35s5g32-131 @) necessary for correctly delivering the e-mail. yahoo.com) and the subject of the message, and the body part includes, for example, the body content (the body is also beautiful) and the URL (a href = "http) of the homepage of the adult site to be advertised. http://www.ohmybuin.com/index.asp?ID=3956623 ") and an image URL (IMG alt = OhMyBuin.Com height = 85 src =" http: //www.ohmybuin.com/banners/title.gif "width = 504) Only the information is described.

Next, the process proceeds to step S14 to inquire whether the e-mail sender is the addresses listed in the block sender list (database), for which the spam blocking program should operate a block sender list DB (database).

As a result of the determination in step S14, when the sender of the e-mail is listed in the blocked sender list, the flow advances to step S34 to reject the reception of the e-mail, for example, to delete the contents immediately without reading the contents of the text. do. This can reduce the load on the mail server (or client) to check whether the e-mail is spam.

On the other hand, if it is determined in step S14 that the sender of the e-mail is not listed in the blocked sender list, the flow advances to step S16 to determine whether the link URLs are web page addresses listed in the blocked URL list (database). In order to do this, the anti-spam program should operate a blocking URL list DB (database).

As a result of the determination in step S16, when the link URL is listed in the blocked URL list, the flow advances to step S34 to reject the reception of the e-mail.

On the other hand, if it is determined in step S16 that the link URL is not listed in the blocked URL list, the process proceeds to step S18 to inquire whether the link URLs are web page addresses listed in the pass-through URL list (database). For this purpose, the anti-spam program must operate a pass-through URL list DB (database).

As a result of the determination in step S18, if the link URL is listed in the pass-through URL list, the flow advances to step S32 to store the e-mail in a general mailbox.

On the other hand, if it is determined in step S18 that the link URL is not listed in the pass-through URL list, the process proceeds to step S20 to access the web page using the link URL.

Next, the flow advances to step S22 to search the contents (Contents) of the connected web page to determine whether or not the spam keyword as defined in the spam keyword database operated by itself exists. As a result of the determination in step S22, when the spam keyword defined in the content of the accessed web page is not used, the link URL of the e-mail is stored in the passing URL list DB (database).

On the other hand, if it is determined in step S22 that the spam keyword defined in the content of the accessed web page is still present, the e-mail is assumed to be spam mail, and the process proceeds to step S24, where the blocked source list DB (database) is used. At the same time, the sender of the corresponding e-mail is stored in step S26, and the link URL of the corresponding e-mail is stored in the blocking URL list DB (database), and the step S28 is performed to store the e-mail in the 'spam box'. Then exit.

Accordingly, for example, [Table 1] and [Table 2] below extract some of the content sources of the connected web page (http://www.ohmybuin.com/index.asp?ID=3956623). As the HTML document, the spam keyword may include "discoloration", "orgasm", "adult humor", "pervert", "adult novel", "oral sex", "sexual apparatus" or "masturbation", and the like. E-mail with the contents of such keywords can be easily filtered by spam mail.

Accordingly, according to the automatic spam mail blocking method through the link URL connection of the present invention, after extracting URL information linked to the received e-mail and accessing the web page, if there is a predetermined spam keyword, it is spam. By filtering out mail automatically, you can improve the blocking efficiency of spam mail.

Although a preferred embodiment of the automatic spam mail blocking method through the link UAL connection according to the present invention described above, the present invention is not limited to this, but the claims and the detailed description of the invention and the scope of the accompanying drawings It is possible to carry out the transformation by the branch and this also belongs to this invention.

According to the automatic spam mail blocking method through the link URL of the present invention as described above, the predetermined spam keyword is extracted through keyword search after extracting the URL information of the received e-mail and accessing the corresponding website. If there is, it is classified as spam mail and automatically blocked, so it can not only improve the blocking efficiency of spam mail but also automatically process the administrator without finding and registering the blocked list and the whitelist on the existing system. And management, which can be efficient and quick.

Claims (5)

In the automatic mail blocking method performed in an email system in which a plurality of mail servers are connected through the Internet, Extracting link URL information existing in the original message of the received e-mail; Accessing a web page linked to the extracted link URL information; and And classifying the received e-mail into a spam mail when a predetermined spam keyword exists in the content of the web page. The method of claim 1, wherein when there is a predefined spam keyword in the content of the web page, the source of the received e-mail is extracted from the message source and stored in the blocked sender list database, and further stored in the blocked sender list database. A method for automatically blocking spam mail through a link URL connection, characterized in that it refuses to receive an e-mail from an existing sender. The method of claim 1, wherein when there is a predefined spam keyword in the content of the web page, the link URL information is stored in a blocking URL list database, and the link URL information existing in the blocking URL list database in the future is a message original. Method for automatically blocking spam mails through the link UALEL, characterized in that the rejection of the e-mail contained in. 4. The method of claim 3, wherein when there is a predefined spam keyword in the content of the web page, the source of the received e-mail is extracted from the message source and stored in the blocked sender list database, and further stored in the blocked sender list database. A method for automatically blocking spam mail through a link URL connection, characterized in that it refuses to receive an e-mail from an existing sender. The method according to any one of claims 1 to 4, wherein when there is no predefined spam keyword in the content of the web page, the message is classified as a general mail, and the link URL information is extracted from the original message and passed through the URL. A method for automatically blocking spam mail through a link UAL access, which is stored in a list database and classifies the e-mail included in the original message of the link UEL information existing in the passing UEL list database in the future.