Once again, the CEO of a major American company has met an untimely — and fake — demise on the pages of CNN’s iReport Web site — and once again, the mischief-making Web site 4chan is suspected of being behind it all. It’s likely that excutive Randall Stephenson was selected as the cybervandalism target because his company, AT&T, reportedly denied access to 4chan over the weekend. The phony iReport claimed that Stephenson had been found dead after a night of “male dancers everywhere and the best blow west of the Mississippi.”