The personal banking information for thousands of Facebook employees was stolen last month, Bloomberg reported earlier Friday. The data breach reportedly occurred when someone stole multiple unencrypted physical hard drives from a Facebook payroll staffer's car. Info on the hard drives included names, bank account numbers, the last four Social Security Number digits, salaries, bonus amounts and equity details, the report said.
The drives contained personal data for about 29,000 Facebook employees, Bloomberg said, quoting a company spokesperson. Facebook reportedly alerted staff on Dec. 13 after discovering the theft on Nov. 20. The drives were stolen on Nov. 17, the report said.
"We worked with law enforcement as they investigated a recent car break-in and theft of an employee's bag containing company equipment with employee payroll information stored on it," a Facebook spokeswoman confirmed in an email to CNET. "We have seen no evidence of abuse and believe this was a smash-and-grab crime rather than an attempt to steal employee information."
Facebook added the people affected were on its US payroll in 2018, and that it is providing identity theft and credit monitoring services to them. No Facebook user data was taken in the theft.
Originally published Dec. 13, 1:17 p.m. PT.
Update, 2:21 p.m.: Adds confirmation and comment from Facebook.