Niels Ferguson is a cryptographer for Microsoft who has designed and implemented cryptographic algorithms, protocols, and large-scale security infrastructures.
Bruce Schneier is an internationally renowned security technologist whose advice is sought by business, government, and the media. He is the author of Applied Cryptography, Secrets and Lies, and Schneier on Security.
Tadayoshi Kohno is a professor at the University of Washington. He is known for his research and for developing innovative new approaches to cryptography and computer security education.