It used to be that the playful Defcon contest of "Spot the Fed" gave hackers and the government agents tracking them a chance interact in a less serious manner.
Hackers who found a government agent among the conference attendees would wear with pride T-shirts that read, "I spotted the Fed." The agent would be given a shirt that read, "I am the Fed." And by flipping the cat-and-mouse dynamic for at least one weekend a year, the two groups more or less came to a greater understanding of each other.

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