Gone are the days of company execs “resting easy” in the belief that only self-reporting or tipsters will bring corporate criminality to light, a top federal prosecutor warned Thursday. Instead they will use innovative tactics — like wire taps or undercover agents — to dig out and prosecute crime in corporate America.

Prosecutors’ actions “should make clear to every corporate executive, every board member, and every sales agent that we will seek to hold you personally accountable for fraud violations. We will not shy away from tough prosecutions and trials,” vowed Lanny Breuer, U.S. assistant attorney general for the Department of Justice‘s criminal division since last April.