In Zoom's case, that extends to what the company calls customer content, or "the content contained in cloud recordings, and instant messages, files, whiteboards ... shared while using the service."
Could your instant messages and videos be used to target advertising campaigns or develop a facial recognition algorithm, like videos collected by other tech companies? That's probably not what people are expecting when they contact a therapist, hold a business meeting, or have a job interview using Zoom.
We reached out to the company for comment on its privacy practices. It acknowledged receiving our questions in an e-mail but hasn't provided answers yet.