Yep, the FBI is unlikely to nail you to the wall for doing something inadvertantly (unless it was really really bad).

A friend of mine is a field agent who spent years prosecuting financial crimes, and a lot of her time was spent knocking on doors and telling people to stop doing stupid stuff. Like one lady in particular was elderly and kept getting taken advantage of by money launderers (people putting cash in her account and telling her to deposit it somewhere else). My friend had to visit her on multiple occasions to explain that she needed to stop doing that.