Jon Callas is a cryptographer, software engineer, User experience designer, and entrepreneur. Jon is the co-author of many crypto and security systems including OpenPGP, DKIM, ZRTP, Skein, and Threefish. Jon has co-founded several startups including PGP, Silent Circle, and Blackphone. Jon has worked on security, user experience, and encryption for Apple, Kroll-O'Gara, Counterpane, and Entrust.
Jon works in the ACLU's Speech, Privacy and Technology Project on issues including surveillance, encryption, machine learning, end-user security, and privacy. Jon is fond of Leica cameras, Morgan sports cars, and Birman cats. Jon's photographs have been used by Wired, CBS News, and The Guggenheim Museum.