When group/corporation sue, or send a cease and desist, to someone/some group for trying to expose a crime that's only partially related to the group/corporation, it's probably because that group/corporation actively engages in that crime.
Person 1: Did you know that Leaf Corp sued someone trying to investigate their subsidiary company for tax fraud?
Person 2: Congress' Law, they must be committing tax fraud too!
Person 1: That's a shame.