Zoom Video Communications has hired former Facebook security chief Alex Stamos to set up an advisory board to improve the privacy and security of its booming video-conferencing app amid a global concern about its security.

Concerns have included ‘zoom bombing’ where uninvited guests can gatecrash a zoom conference. Taiwan and Germany have put restrictions on its use, while Elon Musk’s SpaceX has banned the app.

“To successfully scale a video-heavy platform to such a size, with no appreciable downtime and in the space of weeks, is literally unprecedented in the history of the internet,” Stamos wrote in a blog post. “It has been clear to many people who have worked on production-scale systems that something special has been happening at Zoom, and the related security challenges are fascinating.”

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