Hackers claimed to have compromised more than one million passwords, email addresses and other information from SonyPictures.com in the latest cyberattack on the Japanese electronics giant.
The claim was made on thursday by a group of hackers calling themselves "Lulz Security" on their Twitter feed @LulzSec.
"We recently broke into SonyPictures.com and compromised over 1,000,000 users' personal information, including passwords, email addresses, home addresses, dates of birth, and all Sony opt-in data associated with their accounts," they said.
Sony, whose online services have been targeted by a series of cyberattacks over the past few weeks, said it was investigating the latest alleged breach.
"We are looking into these claims," Sony Pictures Entertainment executive vice president Jim Kennedy said in a statement to AFP.
SonyPictures.com features movie trailers and information about films and television shows and also allows users who sign up to receive email updates.
Lulz Security, the group which claimed the attack on SonyPictures.com, said the data theft exploited one of the most "primitive and common vulnerabilities."
"Why do you put such faith in a company that allows itself to become open to these simple attacks?" Lulz Security said.