https://www.ftc.gov/news-events/press-releases/2020/11/ftc-r...> In its complaint, the FTC alleged that, since at least 2016, Zoom misled users by touting that it offered “end-to-end, 256-bit encryption” to secure users’ communications, when in fact it provided a lower level of security... In reality, the FTC alleges, Zoom maintained the cryptographic keys that could allow Zoom to access the content of its customers’ meetings, and secured its Zoom Meetings, in part, with a lower level of encryption than promised.
See also: https://www.tomsguide.com/news/zoom-security-privacy-woes