Abstract:

Since Google in 2010 suffered a serious attack of hackers, advanced APT information security threats have become the “popular word” for, like Google, RSA, Comodo and other world famous companies. The adverse consequences of persistent attacks of APT has brought about great influence and is disastrous, the final result is to let everyone deep understanding and analysis of the existing security system, in order to find a more advanced and effective means of protection.

Key words: APT attack, information security, unknown threat