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Moxie Marlinspike      

Entrepreneur, Cryptographer & Computer Security Expert

Matthew Rosenfeld, known as Moxie Marlinspike, is an entrepreneur, cryptographer, and computer security researcher. Marlinspike is the creator of Signal, co-founder of the Signal Technology Foundation, and served as the first CEO of Signal Messenger LLC. He is also a co-author of the Signal Protocol encryption used by Signal, WhatsApp, Facebook Messenger, and Skype.

Marlinspike is a former head of the security team at Twitter and the author of a proposed SSL authentication system replacement called Convergence. He previously maintained a cloud-based WPA cracking service and a targeted anonymity service called GoogleSharing.

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