Ep 5 Caleb Sima: From phone phreak to cybersecurity entrepreneur

Caleb Sima started his security career as a consultant and X-Force researcher. Since then Caleb has built a number of security startups, one of the most well-known and successful startups being SPI Dynamics which was later acquired by HP. He later made the switch over to the defender side as a managing VP of cybersecurity at Capital One. Today, Caleb invests and advises start-ups.