Microsoft Teams adds end-to-end encryption for one-to-one conversations

You can now make some Microsoft Teams calls with the confidence that they are quite safe. The Verge notes that Microsoft has made end-to-end encryption widely available for one-to-one conversations after publicly testing the feature since October. If your company’s IT admin turns on E2EE and both sides of the conversation choose to use the feature, it should be much harder for intruders to spy on conversations.

Microsoft warned that you will lose some important features if you use the stricter encryption, including recording, transferring, extending to group conversations, and live captioning. You need to disable E2EE to get those options back.

This could still be important. Although Teams already used encryption both in transit and at rest, it still provided a content decryption window so approved services could respect data retention records. End-to-end encryption prevents anyone outside the intended recipients from decrypting call data – that’s great for privacy, but not so hot for businesses, governments, and law enforcement agencies that want backdoors. It won’t be surprising if authorities oppose Microsoft’s move.

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