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Microsoft Teams will soon block screen capture during meetings

bleepingcomputer.com

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Re: Microsoft Teams will soon block screen capture during meetings

#121
post #93

Earlier quoted context omitted.

Some people might want it, but it doesn’t actually work. It’s probably also required by some compliance theater in some places.

> Some people might want it, but it doesn’t actually work Why do you think they can't prevent on-device screenshots/screen recording can't be prevented when you control the entire stack?

They can't control the entire stack because of the analogue hole

Re: Microsoft Teams will soon block screen capture during meetings

#123

LOL Another stupid feature (enforced by regulations/law/policies) that has no real world use, besides making us users angry :-( Like Google collecting all of our location history for their own usage, but not allowing us to see it via web anymore (only on mobiles), or having the android dialer not allowing us to record our own phone conversation (easily circumvented), or movie/music/game publishers not allowing us to…

> All these are due to laws and regulations that are there to protect the big companies and don’t take into consideration users This feature is not due to laws and regulations. The user in this case is the presenter who clicks the button to enable screenshot protection on their meeting. This is Microsoft trying to deliver a feature their users want , not laws and regulations making them do something their users don’t…

But it’s literally the dumbest feature ever. There’s absolutely nothing preventing a user from pulling out their phone and taking a picture of any slide they want. Or having a camera recording the whole session out of view of their webcam.

It is security theater at its peak.

Re: Microsoft Teams will soon block screen capture during meetings

#124

Earlier quoted context omitted.

> All these are due to laws and regulations that are there to protect the big companies and don’t take into consideration users This feature is not due to laws and regulations. The user in this case is the presenter who clicks the button to enable screenshot protection on their meeting. This is Microsoft trying to deliver a feature their users want , not laws and regulations making them do something their users don’t…

There isn’t a single user (presenter) that would ask something like this. Only a presenter that has to follow some strict “high security” procedures would enable something like this. A politician, for example, will have an excuse in case something leaks. The fact that with a simple mobile having a camera you can copy whatever is being presented (or with slightly more technical ways) is irrelevant for laws and procedu…

If you have a camera on a stand or are holding up a phone, other participants will able to see it and object. Of course it's still possible to get around it. It's possible to get around anything. The idea of privacy controls is to make bad-faith jerks have to work significantly harder.

Re: Microsoft Teams will soon block screen capture during meetings

#125
post #5
post #2

Any security feature that can be totally defeated with a spicy HDMI splitter and a 2nd computer should not exist. This stuff looks much more to me like "fuck the user" than anything else. I am 100% convinced there is a cult of evil bastards at Microsoft, et. al. that is hellbent on making everyone's UI/UX as janky as possible.

Yea, this sounds like "Microsoft teams no longer supporting video on Linux and old versions of mac/windows" more than anything

Yep, joining Teams meetings from a browser on Linux is a flaky experience at best (despite Meet and Zoom working fine.) I'll happily send back a Google Meet invite to anyone that invites me to a Teams meeting.

Re: Microsoft Teams will soon block screen capture during meetings

#126

I wonder how it will work. The article sounds like it just overrides the print screen button. But what about screen recording apps like OBS? Seems like Teams would need to inject some code deep into the os to block that.

it's probably going to be some DRM codec protection similar to Netflix where video goes black for screenshots.

Re: Microsoft Teams will soon block screen capture during meetings

#127
post #44

So how does this affect Teams in the browser?

Very likely. WideVine and PlayReady can enforce.

If they don't it's bye bye Teams for me (a blessing in disguise) because they discontinued the Linux client a while ago.

Re: Microsoft Teams will soon block screen capture during meetings

#128

Earlier quoted context omitted.

It's kind of like locks isn't it? It'll deter honest folks, but will it prevent screen capture when Teams is running in a VM? What about over VNC?

What about a camera? These aren't the use cases that really matters. What matters is the common case, and it's not about deterring honest folks. Honest folks aren't recording. This is really a lesson in security blind spots. The number of people that are trying to "get around this" assuming that's the issue. Edit: I'll make it simple. It will work because honest people aren't trying to get around it. But, they could…

> Honest folks aren't recording.

Honest folks who want to be able to cover their ass later on are.

Honest folks who are working for dishonest people and are planning to be a whistleblower are.

Honest folks who have Recall on are. Possibly against their will if they haven't found out how to turn it off, or it's a work machine where they're not allowed to do so. Maybe they're not if Microsoft actually has enough interdepartmental communication for the "no screenies please" signal to make it all the way to Recall. It'll be hilarious if they don't.

Re: Microsoft Teams will soon block screen capture during meetings

#129
post #93

Earlier quoted context omitted.

> All these are due to laws and regulations that are there to protect the big companies and don’t take into consideration users This feature is not due to laws and regulations. The user in this case is the presenter who clicks the button to enable screenshot protection on their meeting. This is Microsoft trying to deliver a feature their users want , not laws and regulations making them do something their users don’t…

Some people might want it, but it doesn’t actually work. It’s probably also required by some compliance theater in some places.

[deleted]

Re: Microsoft Teams will soon block screen capture during meetings

#130

I wonder how it will work. The article sounds like it just overrides the print screen button. But what about screen recording apps like OBS? Seems like Teams would need to inject some code deep into the os to block that.

On Android, the OS exposes an API allowing the app to control whether it's visible on the screenshot and screen capturing tools (like screen mirroring to your TV). If the app disallowes screenshots (it's called FLAG_SECURE) your screenshot/stream will have a black rectangle instead of the app image. This is usually requested by bank apps and paid content apps like Netflix.

I assume there are provisions for the same thing in all the other supported systems. Everyone without such support will get no video on the affected meetings.

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