This has been done in the past but by digging through CEOs' history. For example a good number of them put fake school credentials on their resume.
Someone would go to the university and search their records and sometimes find CEOs lied. He then would take a short position in company's stock (if publicly traded) and release the info. Sure enough, the stock would drop, and he would gain. SEC didn't like but I think the was nothing they could do as it was technically public information.
It's still being done - see e.g. http://www.muddywatersresearch.com - and there's no reason an outfit like that couldn't publish a report as Anonymous...
Someone would go to the university and search their records and sometimes find CEOs lied. He then would take a short position in company's stock (if publicly traded) and release the info. Sure enough, the stock would drop, and he would gain. SEC didn't like but I think the was nothing they could do as it was technically public information.