Anti-spam gateway system and method

Abstract

The invention discloses an anti-spam gateway system and an anti-spam method. The system comprises a mail sample database for storing various mail samples, and a mail characteristic exploration module for acquiring the mail samples from the mail sample database, comparing the mail samples with all central points, and directly adding the samples into the central points if the similarity between the mail samples and all the central points is less than a certain threshold value, wherein each central point represents a type of samples; when the similarity between the mail samples and the central points is calculated, the mail samples and the central points are resolved into a plurality of parts of contents respectively; for each part, the similarities of the mail sample and the central point are compared; and the global similarity between the mail samples and the central points can be acquired by weighted combination of the similarities of the parts. By using the system and the method, the sample database and a characteristic database have better adaptability to burst spam types and the like; therefore, the leakage rate of spam is low, the instantaneity is high, the manual intervention is low and the system contractability is high.

Description

technical field [0001] The invention relates to the field of e-mail processing, in particular to an anti-spam gateway system and method based on large-scale mail content clustering. Background technique [0002] Spam is usually defined as e-mails with the following attributes: (1) promotional e-mails such as advertisements, electronic publications, various forms of promotional materials that the recipient has not requested or agreed to receive in advance; (3) E-mails that hide the sender's identity, address, title, etc.; (4) E-mails that contain false information sources, senders, routing, etc. [0003] Since the first spam was born, spam has become a difficult problem for mail users, and has also become an important consideration for mail operators to improve user experience and attract users. The task of anti-spam is to keep spam out of the mail system or user's inbox. The mainstream anti-spam technology is mainly based on email content and email sending behavior. [00...

AI Technical Summary

Problems solved by technology

[0008] The existing anti-spam system mainly has the following deficiencies: A), the lack of an effective feedback collection mechanism, and the feedback information cannot be effectively used

The existing anti-spam system cannot adapt to the rapid changes in email types, and some foreign anti-spam strategies do not consider the special situation in China, resulting in a high rate of false positives

At the same time, because the existing anti-spam system lacks an effective misjudgment feedback mechanism, the misjudgment cannot be effectively corrected, and the misjudgment rate is too high

D), a large amount of manual review

The two links of the existing system require more manual review

First of all, for some parts of the system that cannot be judged, manual review is required, and this part has a large amount of review

Secondly, in order to adapt the system to new types of spam, it is necessary to prepare samples for retraining. This part not only requires a large number of samples to be reviewed, but also has high requirements for sample distribution, which makes it difficult

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