A mechanism to defeat a security system through the unintended use of fall-backs or exception paths that are not widely considered during development. Inspired by Alan Rickman's Hans Gruber character in the movie Die Hard (1988), who arranges for the uninterruptible power supplies securing the vaults at Nakotomi Plaza to be cut by causing the police to invoke their terrorist response procedures.

"The circuits that cannot be cut are automatically cut in response to a terrorist incident. You asked for a miracle, Theo, I give you the F-, B-, I..."
"This box is using distributed TACACS. I'll need a Gruber Device to make it fall-back to static password."
"Maybe try pulling the WAN?"
by keepalive February 11, 2020
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