Apple announced a feature that would thwart a popular iPhone cracking method used by police. Law enforcement companies are pitching their hacking tools as a way to defeat Apples yet-to-be-publicly-released security features. Apple planned to counter Grayshift and the tools of other competitors like Israel-based Cellebrite by introducing USB Restricted Mode. In theory, it means if cops dont get to the device almost immediately and keep it on and active, the iPhone becomes a black box theyre unable to peer into.”]
Source: https://gizmodo.com/iphone-hackers-may-already-have-a-workaround-for-cops-t-1826851897

