Comment by makach

Well, this is very problematic for a privacy concerned company. Under no circumstances do I want Apple to scan my private files/photos, aspecially so if it means that an alarm can allow someone to determine if it is a positive or a false positive.

Also, this functionality isn't something they should be able to implement without telling their end users.

It is also problematic because it will just make the cyber criminals more technical aware of what counter measures they must take to protect their illegal data.

The consequence is very bad for the regular consumer: the cyber criminal will be able to hide, and the government has the possibility to scan your files. End consumer lose, again.