He is well known for developing the “cold boot” attack against disk encryption, which altered widespread thinking on security assumptions about the behavior of RAM, influenced computer forensics practice, and inspired leakage-resilient cryptography. A noted expert on electronic voting security, he helped lead the first independent review of the election technology used by half a billion voters in India, which prompted the national government to undertake major technical reforms. In recent work, he exposed widespread flaws in public key generation that compromised the security of 5-10% of Internet hosts serving HTTPS and SSH. His work has won numerous distinctions, including two best paper awards from the USENIX Security conference. He received his Ph.D. in computer science from Princeton University.