David Wong is a Security Consultant at the Cryptography Services practice of NCC Group. He has been part of several publicly funded open source audits such as OpenSSL and Let's Encrypt. He has conducted research in many domains in cryptography, publishing whitepapers and sharing results at various conferences including Black Hat and DEF CON as well as giving a recurrent cryptography course at Black Hat. He has contributed to standards like TLS 1.3 and the Noise Protocol Framework. He has found vulnerabilities in many systems including CVE-2016-3959 in the Go programming language and a bug in SHA-3's derived KangarooTwelve reference implementation. Prior to NCC Group, David graduated from the University of Bordeaux with a Masters in Cryptography, and prior to this from the University of Lyon and McMaster University with a Bachelor in Mathematics.