Method and device for sending mail

Abstract

The invention discloses a mail sending method and device. The device mainly includes an attachment processing module, an interception module, a whitelist confirmation module, an invisible watermark adding module and an email sending module; the method is mainly divided into the following steps: firstly adding an attachment to the email and acquiring the content of the attachment; Find the keyword in the list to determine whether the email needs to be intercepted, then obtain the recipient's mailbox name for whitelist judgment, add invisible watermarks to recipient attachments that are not in the whitelist, and finally send the new invisible watermarked attachments to recipient. The invisible watermark added in the present invention adopts font transformation technology, the content of the document has no obvious difference from the original document in appearance, the watermark information cannot be modified without professional tools and algorithms, and the anti-forgery ability is strong; the watermark information is more abundant, including the receiver and the sender. Person information, sending time information, can accurately locate the document transmission path.

Description

technical field [0001] The invention belongs to the field of electronic information, and particularly relates to a mail sending method and device. Background technique [0002] In the Internet era, the outsourcing of electronic documents is a daily work. There are email exchanges between different departments and enterprises. In some electronic documents involving trade secrets and technical secrets, many companies adopt electronic watermarks and leak traceability clauses. It has a deterrent effect, but if an electronic document is sent to multiple other units and it is discovered that the leak is not known from where it leaked. Moreover, there are many methods that can be directly erased or modified using the clear watermark, and the content of the clear watermark can be modified to the information of other people who own the document, which causes great trouble to the traceability of document watermark leakage. [0003] At present, in order to prevent leakage of conventio...

AI Technical Summary

Problems solved by technology

[0002] In the Internet age, sending out electronic documents is a daily task. Different departments and companies have email exchanges. In some electronic documents involving commercial secrets and technical secrets, many companies adopt electronic watermarks and leak retrospective clauses. It has a deterrent effect, but if an electronic document is sent to multiple other units, it is found that the leak incident does not know where it leaked from

Moreover, there are many ways to directly erase or modify the clear watermark, and the content of the clear watermark can be modified to the information of other persons who own the document, which causes great trouble for the traceability of the document watermark leakage

[0003] At present, in order to prevent leakage of conventional electronic documents, clear watermark information is usually added to the document. The clear watermark is visible to the naked eye and is easily erased by people. Moreover, adding watermarks to some official documents is not visually very good.

The content of the watermark is generally based on company information, and it is impossible to locate who leaked the file, and it can only serve as a deterrent

[0004] Most people add some leak retroactive clauses when sending out emails, but there are many people who send files, and it is not known who the specific leaker is, which plays a very small deterrent effect

[0005] There are also some units that use a centralized document printing system. This document management method can play a very good role in protecting confidential documents from leaking within the enterprise, but it cannot protect when interacting with documents from other units.

If other units have permission to download in the system, and then forward due to insufficient protection measures, the leak still cannot be located, and it is not a safe practice to open the management authority of the unit’s system to other units

Images