A Hacker Found The BitLocker Backdoor (youtube.com)
Ie Windows.
The way authorities have been accessing people's Windows computer without having to get login info.
Usually hackers keep the hack secret, but this hacker felt 'he'd been wronged by Microsoft' so he made it public, instead of telling Microsoft and getting money ('bug bounty') for finding one of their vulnerabilities. But it's only up to $60k it looks like, and then there's a problem of how to get paid.
In this case, the hacker said that Microsoft didn't hold up their end of the bargain for a bug bounty, so they published it, the hacker wrote.
Top comment. 'Its not a backdoor, its a window'
tldr? Don't use Windows, or any Microsoft product, ever. Not Discord, not Github, not Skype.