Sony Pictures sued by ex-employees over mismanagement following security breach

Sony Pictures has been sued by two former employees over last month's security breach that exposed thousands of documents to the public.

According to CNET, Michael Corona and Christina Mathis claim Sony knew its computer systems were not secure enough to protect confidential employee information prior to the breach, which was revealed to the public on November 24.

The lawsuit filed in the US District Court in the Central District of California by Seattle-based law firm Keller Rohrback on behalf of the two employees says Sony "failed" to protect from "law-breaking hackers" confidential, personally identifiable employee information including Social Security numbers, home addresses, phone numbers, scans of passports and visas, performance evaluations and health care records.

The complainants have stated in the lawsuit that Sony is no stranger to data breaches, making its vulnerability to this latest attack particularly surprising and egregious.

At least four films and thousands of documents were leaked after the attack on Sony by the group called the "Guardians of Peace."

The incident is being investigated by the FBI. The agency also sent out an " FBI alert" to companies in the entertainment sector, describing the characteristics of the so-called "wiper malware" used in the attack, the report said.