On December 28, 2009, the team presented their mission at the 26th annual Chaos Communication Congress.
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A new software tool, "PresenTationS", was presented at the 26th Chaos Communication Congress (26C3).
From 1998 to 2005 he was the main organizer of the Chaos Communication Congress and the Chaos Communication Camps.
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At the 27th annual German Chaos Communication Congress hacker conference ("27C3") in 2010, German free software programmer Harald Welte showed that it is possible to artificially change the amount of money stored on a first-generation EasyCard—based on the MIFARE Classic—using nothing more than a USB RFID reader and a laptop computer running open source software.
Chaos Communication Congress — oldest and Europe's biggest hacker conferences held by Chaos Computer Club.