The security of 29,000 Facebook workers was compromised in November when computer equipment was stolen from an employee’s car. The thief walked away with Facebook 2018 payroll data that included employee names, bank account information, salary, and bonus details, and partial Social Security numbers.

“This theft impacts current and former Facebook employees only, and no Facebook user data was involved,” a Facebook spokesperson reported to Business Insider. 

The data was included on two unencrypted hard drives, which, according to Facebook policy, should never have been removed from the office. Employees were notified of the incident Friday. As is customary with breach incidents, affected workers were offered free subscriptions to identity theft monitoring services.

The theft, once again, places a spotlight on Facebook’s security measures, as the social media giant has often been highlighted for data security issues. However, unlike Facebook’s most recent breaches, this incident did not include user information.