Hackers have a lot of fancy names for the technical exploits they use to gain access to a company's networks: cross-site scripting, buffer overflows or the particularly evil-sounding SQL injection, to name a few. But Johnny Long prefers a simpler entry point for data theft: the emergency exit door.

"By law, employees have to be able to leave a building without showing credentials," Long says. "So the way out is often the easiest way in."

At Forbes.

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