First thing that comes to mind is The Underhanded C Contest [0] where contestants try to introduce code that looks harmless, but actually is malicious and even

First thing that comes to mind is The Underhanded C Contest [0] where contestants try to introduce code that looks harmless, but actually is malicious and even if caught should look like an innocent bug at worse. [0] http://www.underhanded-c.org http://www.underhanded-c.org