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The ACLU's Chris Soghoian gave a talk at the 30th annual Chaos Communications Congress about the history of commercial encryption technologies in the United States. Do you use PGP? Find it too difficult? Listen to Soghoian explain how the FBI tried to ban certain kinds of encryption in the United States, and plead with engineers to make the technology more accessible so that everyone can protect the content of their communications. Find out what's encrypted today and what isn't, and what the future holds.