Matt Jones leads the anti-spam engineering team at WhatsApp, focusing on scalable ways to detect and prevent abuse for 1 billion users. Prior to that, he spent seven years at Facebook working on anti-abuse systems, from reverse-engineering malware and building high-throughput classification systems to defending new products and leading teams in California and London. Along the way, he's protected against malicious ISPs, compromised telephone carriers, and numerous spammers. Before Facebook, Matt earned his BS in Computer Science at Stanford University.