Scarlett Johansson said she alerted the FBI after private pictures meant for ex husband Ryan Reynolds surfaced online.
Appeaing on The Late Show With David Letterman, Johansson described the leak pictures as 'creepy'.
She said: "Somebody stole my nudey photos and they were out there for all the world to see. Which was unfortunate really. It was quite shocking, it was extremely creepy."
She added: "My password was constantly changing for months and months. And I kept thinking, 'Why is my password changing?'"
The guy was sitting there constantly, every 20 seconds, all pasty and pervy and weird. That's the creepiest thing really.
The man accused of hacking into the personal accounts and stealing nude photographs of celebrities including Scarlett Johansson and Mila Kunis, has plead not guilty at a pre-trial hearing.
Christopher Chaney appeared in front of a Los Angeles court yesterday (November 1), where a federal judge raised his bail bond to $110,000 (£68,685) in the wake of news that three further allegations have been made against him - one of whom is another unnamed celebrity, according to CNN.