Facing sustained backlash for its privacy and security policies, Zoom Video Communications Inc. /zigman2/quotes/211319643/composite ZM +4.70% issued another update on its efforts to improve its practices Wednesday. The company announced in a blog post that it has "officially" formed its CISO Council made up of chief information security officers from various industries. The company is also a creating an advisory board within that council that "will include security leaders from VMware /zigman2/quotes/209864107/composite VMW +0.49% , Netflix /zigman2/quotes/202353025/composite NFLX +0.88% , Uber /zigman2/quotes/211348248/composite UBER -0.46% , Electronic Arts /zigman2/quotes/206954087/composite EA +2.21% , and others." Zoom announced as well that Stanford adjunct professor Alex Stamos has joined the company as an advisor. The company calls him "a widely respected expert on cybersecurity" and points to prior experience working as the chief security officer of Facebook Inc. /zigman2/quotes/205064656/composite FB +0.48% . Zoom shares are up 2% in premarket trading Wednesday. The stock has shed 22% so far in April as the S&P 500 /zigman2/quotes/210599714/realtime SPX +0.11% has advanced about 3%.