American Airlines, a major US-based airline, has disclosed a data breach where an unauthorized party gained access to employee accounts via a phishing campaign.

In a notification letter sent to impacted individuals the company said that the breach was discovered in July 2022, and may have affected customer and employees’ personal information, such as name, date of birth, mailing address, phone number, email address, driver’s license number, passport number, and/or certain medical information.

“Upon discovery of the incident, we secured the applicable email accounts and engaged a third party cybersecurity forensic firm to conduct a forensic investigation to determine the nature and the scope of the incident. Our investigation determined that certain personal information was in the email accounts. We conducted a full eDiscovery exercise and determined some of your personal information may have been contained in the accessed email accounts,” the notice reads.

There is no evidence that exposed personal information was misused, the company said.

Recently, the ride-hailing company Uber Technologies and video game publisher Rockstar Games also disclosed similar breaches.