Don't whistleblow unless you can work in an entirely different industry where nobody knows you (and nobody reads the news). Or of course you can do so entirely anonymously.

I had already learned my lesson. My company had instituted an ethics hotline a few years before. Someone I knew actually had the guts to point out a large-scale graft, and... nothing was done about it. So I didn't bother.

I didn't mean some internal thing, doesn't the SEC give % rewards to whistleblowers?