Zscaler announced the appointment of Charles Giancarlo to its board of directors. As the former chief technology and development officer for Cisco Systems and a managing director at Silver Lake Partners, Giancarlo has a proven track record for delivering important new networking technologies and recognizing industry leaders. Mr. Giancarlo has more than 30 years of experience in the semiconductor, communications, and networking industries. Most recently he was a senior advisor and previously a managing director and head of Value Creation at Silver Lake Partners. During his 14 years at Cisco, he was a key contributor to the growth of the company and was ultimately responsible for the products that generated 80% of Cisco's revenues.