Last month Apple announced it was releasing to developers source code for a few key components of its Mac OS X Server operating system.

CNN: Apple alters open-source licenses after criticism

Point it at a site or an entire domain, such as .edu, and it generates a list of e-mails, log-in screens, database errors and source code, all of which are classic ways to gain entry onto a server.

FORBES: Google Me Not

They have lost their source code, leaked an upcoming redesign, had to restore data on at least one server, and have to sweep for any shells the attackers may have left behind.

FORBES: The Real Lessons Of Gawker's Security Mess