Celebrity Hackers -- We're Doing Dexter's Work

The hackers responsible for exposing multiple celebrities' financial information fancy themselves heroic outlaws ... because they secretly idolize Dexter, the vigilante serial killer from the Showtime show.

The first clue ... there's a quote from "Dexter" at the top of the hackers' website -- "If you believe that God makes miracles, you have to wonder if Satan has a few up his sleeve." The quote is from the Season 2 finale episode entitled "The British Invasion."

But there's another more secret message ... if you search the website's source code ... you'll discover a link to a hidden YouTube video that doesn't appear anywhere on the hackers' page. The video contains the "Dexter" end credits theme music.

Then there's the obvious parallels between Dexter's "code" -- only killing murderers -- and the hackers' self-righteous vigilantism.

Among the celebs hacked ... Kim Kardashian, Joe Biden, Hillary Clinton, Mel Gibson, Ashton Kutcher, Jay-Z, Beyonce, Donald Trump, Al Gore, and Hulk Hogan. It's still unclear how the hackers selected their victims.