David has invested mostly in network technology, infrastructure SaaS, consumer Internet and data security. His current portfolio includes Delivery Agent, LifeLock, LinkedIn, Reputation.com, Smule, Tripwire and Zoosk. In 1995 David co-founded VeriSign as a Bessemer-funded spinout of RSA. David received both his A.B. in math and computer science and his MBA degrees from Harvard University. Follow David on Twitter.