Mail security check method and device, computer equipment and storage medium

Abstract

The invention discloses a mail security check method and device, computer equipment and a storage medium. The method comprises the following steps of: when a mail receiving and sending request is detected, obtaining an information carrier contained in the mail receiving and sending request, identifying the format of the information carrier; if a JPEG format exists, acquiring an information carriercorresponding to the JPEG format as a target carrier, and analyzing the target carrier to obtain parsed content; through a dual-probe mode, carrying out bidirectional detection on the parsed contentto determine real positions of a file header identifier and a file tail identifier contained in the parsed content; based on the real positions, determining steganography recognition results; and whenthe steganography recognition result shows that steganography exists, refusing the mail receiving and sending request, and sending the steganography recognition result to the management end. Whethersteganography exists or not is judged by obtaining the real positions of the file header identifier and/or the file tail identifier, so that pertinence is high, rapid steganography recognition is achieved, and the safety detection efficiency in the mail receiving and sending process is improved.

Description

technical field [0001] The invention relates to the field of information security, in particular to a mail security checking method, device, computer equipment and storage medium. Background technique [0002] With the rapid development of computer technology, electronic office has gradually formed a trend. Through electronic office, the efficiency of various transaction processing can be accelerated. Among them, information transmission by email is an important link in electronic office. Between enterprises and other enterprises, it is often necessary to carry out information transmission and communication by mail. [0003] When using emails for information transmission, sometimes pictures are inserted into the content or background of emails for the sake of aesthetics or publicity, and sometimes pictures are inserted into email attachments as attachments, and emails are used as a carrier of electronic information , its data security cannot be ignored. Therefore, when tran...

AI Technical Summary

Problems solved by technology

[0004] At present, the recognition of image steganography is mainly through training models (such as deep learning neural network recognition model or multi-directional Markov model), and then through the trained model to identify whether there is steganography in the image. However, it

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