Fastly Altitude - June 25, 2015. Joe Williams, Computer Operator at GitHub discusses using a CDN to mitigate security threats. Video of the talk: http://fastly.us/Altitude2015_Mitigating-Security-Threats-2 Joe's bio: Joe Williams is a Computer Operator at GitHub, and joined their infrastructure team in August 2013. Joe's passion for distributed systems, queuing theory and automation help keep the lights on. When not behind a computer you can generally find him riding a bicycle around Marin, CA.