https://www.vice.com/en_us/article/8xzjj4/zoom-video-conferencing-vulnerability-lets-hackers-turn-on-your-webcam

On Monday a security researcher published details on several security and privacy issues with the massively popular video conferencing software Zoom after the company failed to properly fix or address them. One issue allows websites to turn on a Mac users' webcam without their explicit consent or perhaps knowledge. The vulnerabilities are still active as of the time of this article's publication.

"You can still use this exploit to launch someone into a call without their permission," Jonathan Leitschuh, a security engineer at open source system Gradle, wrote in a Medium post, along with two proof-of-concept links Mac Zoom users can try themselves.