Before you accept that envelope stuffed with cash in exchange for inside information about public companies, just remember that sometimes it is a set-up. And the FBI is watching and taking photographs that, in short order, may become “Exhibit A” in the U.S. Attorney’s Office criminal complaint against you for securities fraud. Seriously, it is unusual but it can happen! Just ask former KPMG partner Scott London, who is allegedly the envelope recipient/tipper in the photo below.