A large number of unauthorized sign-in attempts that occurred between October 7 and 10 forced Sony to suspend about 93,000 accounts on its online entertainment networks, the company announced on Wednesday.
The compromised accounts were active on PlayStation Network, Sony Entertainment Network and Sony Online Entertainment services. The company said that no credit card data has been stolen under the occasion.
“These were unauthorized attempts to verify valid user accounts on our services using very large sets of sign-in IDs and passwords," Sony explained. The hackers used information which "appears to include a large amount of data obtained from one or more compromised lists from other companies, sites or sources."
Sony suffered a huge data breach last April, when more than 100 million online accounts were compromised and the PlayStation Network and Qriocity music service had to be temporarily closed.
A separate attack, conducted in June by a group of hackers known as Lulz Security, targeted accounts from SonyPictures.com. The hackers claimed that more than one million passwords, email addresses and other personal information were accessed.
Analysts say this kind of breaches threaten to further affect Sony’s brand image as a supplier of gadgets safely connected with the online entertainment world.