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Site: https://www.telechallenge.org/
Twitter: https://www.twitter.com/telechallenge
Youtube: https://www.youtube.com/channel/UCWx...lQkg/playlists
The TeleChallenge is a fast-paced, epic battle of wits and skill. Previous winners are few in number, and are among the most elite hackers at DEF CON. Designed to be played by teams, and running through the whole weekend, the TeleChallenge is entirely playable over a touch tone phone. Don't let fear of the Challenge hold you for ransom. Your voice is your passport!