Happy to get bits from A to B. Go make doing shady things easier/safer on your own time.
I personally doubt it’s particularly sophisticated at all. But the fear of getting caught it creates would be enough to deter a significant portion of potential leakers.
Why is any watermarking necessary at all? Because DLP (which includes anti-leaking control) is a huge concern for most businesses, and working from home makes the problem even more serious. Zoom is trying very hard to position themselves in this market (and doing a rather good job of it), so in that context the feature makes perfect sense.
I must be too far detached from large companies to know/care about this.
If this kind of thing is now done on a Zoom call, how is it any different than prior to Zoom being in the meeting, hearing the information and passing it on via another means, like a phone call? What value would leaking the call as in your example have?
I'm struggling a bit to think of any examples of private information being leaked that have really changed because of Zoom. Trusted employees are able to leak private corporate information, always have been.
Zoom meetings are like those, but with the sharing of sensitive information transmitted over the Internet. Someone could easily record their screen and audio and capture said sensitive information for subsequent sharing -- or "leaking"-- with someone else.