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submitted 2 months ago by sabreW4K3@lazysoci.al to c/android@lemdro.id
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[-] frongt@lemmy.zip 6 points 2 months ago

And how do those apps prevent device management from accessing the messages when they're decrypted?

[-] limerod@reddthat.com -3 points 2 months ago

By not storing decrypted message on device? You can also block screenshots if you have a reasonable suspicious your screen can be used to capture the text shown on the device.

[-] Natanael@infosec.pub 5 points 2 months ago

The apps run at less privileges than device management apps. They can't do any of that

[-] limerod@reddthat.com 0 points 2 months ago

Apps using Flag_Secure and Secure_display can block screencapture. While user apps stay below MDM apps in privilege. The MDN app themselves reside below the android system.

Do you have a source of MDM apps bypassing secure display and having the ability to capture the display?

[-] frongt@lemmy.zip 3 points 2 months ago

If the app has decrypted messages, device management can see them.

[-] limerod@reddthat.com 0 points 2 months ago

How? The decrypted messages would have to be stored in plan text to be read. Unless, it can be read from RAM..

[-] Serinus@lemmy.world 2 points 2 months ago

If you can read it, they can read it. They have root on the company device.

[-] limerod@reddthat.com 0 points 2 months ago

If it's rooted sure. But, regular work profile phones with MDM software are not.

[-] frongt@lemmy.zip 1 points 2 months ago

Messaging apps often implement various APIs for better Android integration. But even if they don't, any management service can implement certain APIs, like the accessibility API, that gives them access to everything each app is doing. In that case, it can't necessarily read the messages as data, but it can record your screen as image or video.

[-] limerod@reddthat.com 1 points 2 months ago

True, but Accessibility API cannot bypass secure display, and secure flag I had replied that in another comment so I did not mention that here.

this post was submitted on 30 Nov 2025
70 points (89.8% liked)

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