Partner, Bessemer Venture PartnersDavid Cowan joined Bessemer in 1992. Cowan has invested mostly in network technology, infrastructure SaaS, consumer Internet and cyber-security. His current portfolio includes CrowdFlower, Getinsured, LifeLock (IPO), LinkedIn (IPO), Nominum, Reputation.com, Skybox Imaging, Smule and Zoosk. More than 20 of his startup investments have gone on to IPO. In 1995 he co-founded VeriSign as a Bessemer-funded spinout of RSA and served as VeriSign's initial chairman; his other cyber-security exits have included Counterpane (acquired by BT), Cyota (acquired by RSA), ON (IPO), Postini (acquired by Google), Tripwire (acquired by Thoma Bravo), Tumbleweed (IPO), Valicert (IPO) and Worldtalk (IPO).