As soon as the electronics giant discovered the breach, it initiated an internal investigation and discovered some data on a file server had been accessed during the intrusion. Panasonic spokesperson Dannea DeLisser said the breach began on June 22 and ended on November 3 — and the unauthorized access was first detected on November 11.
After detecting the unauthorized access, the company immediately reported the incident to the relevant authorities and implemented security countermeasures, including steps to prevent external access to the network, according to a Panasonic advisory.