The personal information of job candidates and interns was accessed during the November cyberattack.
The company was unable to say if hackers had accessed any sensitive information at the time of the data breach. Panasonic said in an update published on January 7 that personal information relating to candidates who applied for employment or participated in internships at certain divisions of the company was accessed during the incident. Those affected were notified by Panasonic.
Dannea DeLisser, a Panasonic spokeswoman, wouldn't say how many people were impacted or the nature of the information accessed.
The data breach began on June 22 and ended on November 3, before being detected on November 11, and saw the as-yet-unnamed hackers obtain files containing "business-related information" provided by business partners.
An internal investigation by the company found that a third party illegally accessed a file server in Japan via the server of an overseas subsidiary. After detecting unauthorized access, Panasonic immediately implemented additional security measures, including strengthened access controls from overseas locations, resetting relevant passwords, and strengthened server access monitoring.
Panasonic said it was beefing up its security.
The November data breach that hit Panasonic came just months after the company's Indian subsidiary fell victim to a ransomware attack that saw hackers leak 4 gigabytes of data, including financial information and email addresses.
The Panasonic internal network has a data breach.