The rapid development of network technology has brought great convenience for people's lives and work.The Internet has become an important means to use information and resource sharing.

We marvel at superb and convenient of Network technology, malicious code including Trojans, viruses, backdoors and so so make us very confused at the same time.The number of popular malicious code on the Internet are Increasing in geometric progression.The most harassment is that the private or secret documents had been stolen surreptitiously but the user knows nothing.

The issue about how to protect computer information security, namely the confidentiality of the information content appears very important.When the malicious code will read the computer information, if this operation can always be detected and stop, then, the malicious code should be confused.Therefore, we must adopt a more low-layer protection techniques and means.
In WinTSDs view, Trojan horses, viruses, backdoor programs and other malicious code and common applications are no different, they are all codes which can run in the operating system, but the malicious code run without user interface, computer users do not know its operations.

WinTSD's concern is the access to the protected files.WinTSD adopts active defense technology.WinTSD takes initiative to intercept the program (including Trojan horses, viruses, backdoors and other malicious program code).

Any program code wants to access the documents protected by WinTSD, must be licensed by WinTSD.WinTSD delivers this authority to computer user, by the user to decide whether allow to access secret documents.Even if Trojans, viruses, backdoors and other malicious code program is running, as long as attempts to access protected files, the covert operation must be exposed.
WinTSD uses transparent encryption technology, file access control technology and self-security technology to achieve full control of the protection of secret documents.