If you are the target of automated copyright trolling, inspect your server logs whenever you get a notice. Some troll bots will (surprisingly) use an honest HTTP user agent so you can easily block it.
Of course, one can easily argue that knowingly blocking user agents that are entirely legal themselves, in order to prevent being caught violating copyright, is an entirely new crime.
(Remember that this site is considered a publishing business, they don't have the same luxuries when it comes to blocking visitors that individual have)
I'm assuming by honest they mean it explicitly states "Image Enforcement Bot" or similar - so it can be filtered out with very minimal risk to real users
(Remember that this site is considered a publishing business, they don't have the same luxuries when it comes to blocking visitors that individual have)