This is particularly concerning for those in China. Keep in mind over 1,000 Chinese hospitals now use Zoom, as detailed in the Feb 26th blog post by CEO Eric Yuan[1].

If anything, I suspect this has less to do with hacking and more with insiders abusing their access to the system. Chinese hackers are very often extremely competent day time programmers, and have been known to sell their internal access to the highest bidder[2].

[1] - https://blog.zoom.us/wordpress/2020/02/26/zoom-commitment-us...

[2] - https://intrusiontruth.wordpress.com/2019/07/25/encore-apt17...