Surprised they took the path of acquiring Keybase and hiring Alex Stamos (ex FB CISO) vs. hiring Moxie Marlinspike and other respectable professionals. Keybase's reputation has become eroded with their recent crypto currency signing nonsense. https://en.wikipedia.org/wiki/Moxie_Marlinspike
From this article: [0]
> Within days, Stamos was on the phone with Keybase co-founder Max Krohn, and the teams started working toward a deal. Yuan said after he talked with Krohn and dug into Keybase’s software, he was convinced this was the right deal.
[0] https://www.cnbc.com/2020/05/07/zoom-buys-keybase-in-first-d...