David McGrew is a Fellow at Cisco Systems, where he leads research and development to detect threats, vulnerabilities, and attacks using network data, and to protect data through applied cryptography. He pioneered the commercial use of encrypted traffic analysis to defend networked information systems, and designed authenticated encryption and secure voice and video standards that are in widespread use, most notably GCM and Secure RTP, contributed to open source projects, published research results, championed open, patent/royalty-free cryptography, and co-founded the IRTF Crypto Forum Research Group. He holds a PhD in Physics from Michigan State University, and outside of work, he enjoys Linux, sailing, sports cars, jazz records, and guitar.