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Finding backdoor threats within applications

Chris Wysopal EXPERT RESPONSE FROM: Chris Wysopal

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QUESTION POSED ON: 22 October 2007
What is the best approach to uncover hidden backdoor threats within applications?

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Backdoor threats are a method of bypassing authentication or other security controls in order to access a computer system or the data contained on that system. In fact, backdoors could ultimately lead to cyberfraud. I believe that static binary analysis is the best way to find malicious code such as backdoors, as well as root kits. That's because hackers can change binaries after they are compiled, and it is impossible to uncover this with source code tools.


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