On a technical level: I assume they'd be finding files they want to block by looking for a hash, right? Are these guaranteed to be unique or are collisions poss

On a technical level: I assume they'd be finding files they want to block by looking for a hash, right? Are these guaranteed to be unique or are collisions possible? And any organized and genuine bad actors can work around some kind of hash filter by altering files slightly, right? I'd hate to think that Google's abject arrogance is going to result in false positives that are going to nuke normal peoples' livelihood with no recourse while again barely having an impact on real bad guys. On an ethical and moral level: my opinion is subjective, but this puts an undesirable amount of control over people in the hands of a company that has demonstrated that it cannot be trusted. If Google cannot provide actual human customer support to avoid wrecking lives with bad algorithms that make wrong decisions, then their policy should be to merely allow everything that's not blocked by law/court-order.