That's absurd. The law is literally "Breaking and Entering" which would be broken as they did so with the intent to commit an offence. Trespassing would fit this as well, if we want to use silly comparisons for this matter. Wouldn't it have made more sense to look at Computer Crime Laws to attempt to defend OP.

I read this a few days ago, and first thought was probably should have posted this well after contacting OG about it. Maybe even posting in conjunction. Should have probably stated you were going to perform test before going ahead and doing so. I don't know shit about website design and security so I can't speak to much else here apart from general courtesies and socially acceptable practices.