Microsoft repo secretly installed on all Raspberry Pi’s Linux OS – nixCraft
“In a recent update, the Raspberry Pi OS installed a Microsoft apt repository on all machines running Raspberry Pi OS without the person’s or admin’s knowledge. Every time a Raspbian device is updated by having this repo, it will ping a Microsoft server. Microsoft telemetry has a bad reputation in the Linux community. Let us see why and how this matters to Linux users.”
Dislaimer: Haven’t checked this yet, I can hardly imagine…