Hacking With The Stars: A-Listers Leonardo DiCaprio, Steve Martin, Nicole Kidman Among Victims Of Infamous Hacker 'Guccifer'

A slew of big name stars -- Leonardo DiCaprio, Nicole Kidman, Steve Martin, Robert Redford and Warren Beatty -- and the smash TV show Downton Abbey were all victims of the notorious hacker Guccifer, RadarOnline.com has learned.

The Smoking Gun reports that Redford and Beatty's phone numbers were stolen by the hacker, as were Kidman and DiCaprio's e-mail addresses.

A script for Downton Abbey's season four finale was snatched six months prior to the episode's broadcast, according to the report.

Guccifer's antics previously made headlines after the hacker infiltrated the personal accounts -- including, in some cases, confidential financial statements, e-mails, and contact lists -- of political figures such as Colin Powell, Bush and Rockefeller relatives, and members of President Barack Obama's administration. Other prominent personalities hacked include tell-all scribe Kitty Kelley, Star 80 beauty Mariel Hemingway and John Dean, a former Richard Nixon aide.

Most of the victims likely had no clue of the incidents, TSG reported.

In a bizarre twist, the hacker himself was the person to notify TSG of his latest celebrity conquests, telling the site he had a dream “in which a woman is stepping up to me saying that she is from Federal Bureau and I am busted" while he'd try "desperately to erase my files on my computer at my desk or on my smartphone which btw I don't have because I can't afford one.”