A bit oftopic but when last week came out, Cellebrite could open the Trump shooters phone, there was a PDF, they can brute force all android phones since from Android 7 or newer. What changed there? Why can they brute force all newer versions?
Android 7 is when Google switched from dead simple full-"disk" encryption to per-file hackery with complicated key management. Basically the whole data encryption scheme changed.
https://www.documentcloud.org/documents/24833831-cellebrite-...