Police get caught committing crimes via hidden (or non-hidden, LOL) cameras all the time.

The same is true for corporations (and plain old abusive bosses).

Where I live, a company was caught making plans for illegal dumping (toxic waste) thanks to a hidden camera worn by a whistleblower.

The most recent news about hidden cameras catching corporate misbehavior are mostly related to meat processing plants. In Texas, I believe they passed an unconstitutional law a few years ago banning people from recording (in public) near factory farms and meat processing plants.

All this illegal/evil behavior was foiled thanks to hidden cameras.

This is why I firmly believe in "one party" laws. Look that up if you don't know what it means.