Back in January Microsoft encrypted all my hard drives without saying anything. I was playing around with a dual boot yesterday and somehow aggravated Secureboot. So my C: panicked and required a 40 character key to unlock.
Your key is backed up to the Microsoft account associated with your install. Which is considerate to the hackers. (and saved me from a re-install) But if you've got an unactivated copy, local account, or don't know your M$ account credentials, your boned.
Control Panel > System Security > Bitlocker Encryption.
BTW, I was aware that M$ was doing this and even made fun of the effected users. Karma.
It takes a screenshot every five seconds and runs an LLM over it to extract text. Then there's a UI where you can query it for what you did in the past.
It came under fire when they wanted to introduce it last year, because it stored all that data on your disk in unencrypted form. Meaning if anyone manages to run malicious code on your system, they don't need to do the collecting themselves anymore, but can rather just send off any screenshotted passwords or whatever other secret things you might've been doing on your PC at any point in time. In particular, Microsoft had claimed that the data would be encrypted and it wasn't. Didn't even need special permissions to access it.
No idea, if they fixed the encryption now, or if this is just a case of the shitstorm having died down, so they roll it out now. But yeah, even with encryption, the implications aren't great. If your parents or boss or law enforcement want to know what you were doing on your PC, they now have an exact history. And Microsoft could still change their mind and decide to upload all your data at any point in the future.
Doesnโt that take a ton of CPU/Memory?
Yeah, good question. I imagine the screenshotting itself is largely negligible, although obviously not free either. I don't know when the LLM gets to do its job. Theoretically, it could be delayed until some point where there's not much going on on your PC.
At some point, Microsoft wanted to roll out these AI features only on PCs which have an NPU, which is basically an additional CPU with a different architecture optimized for pattern recognition and such. I don't know, if they still hold onto that requirement, but it would mean that it wouldn't hog your CPU at least.
They have been somewhat desperate to roll out Recall, because it was the only semi-useful out of a handful of features that they came up with to somehow integrate AI into Windows. So, that's why I'm never quite sure, what requirements they're still holding onto.