on 3 May said that it fired an employee accused of bragging on matchmaking app Tinder about his access to private user information.

The incident comes as Facebook faces global concerns about personal data privacy, including Congressional hearings at which CEO Mark Zuckerberg testified. A Twitter user earlier on 30 April posted screenshots of the Tinder conversation, saying Facebook's security engineer is "likely using privileged access to stalk women online".

In the unverified screenshot, the employee in question writes of being a “professional stalker” searching for hackers. Jackie Stokes, founder of Spyglass Securities, had confirmed from LinkedIn, Tinder and various other profiles that said employee was indeed a Facebook security engineer.

A Facebook spokesperson had said then that Facebook's security engineers have access to information which they deem to be necessary for dealing with bug reports, account support inquiries and legal requests.

I should mention that I confirmed this individual works at FB through cross reference of his Tinder profile pic, LinkedIn, and @alexstamos’ https://t.co/xKFDknYqTh connections.

— Jackie Stokes 🙋🏽 (@find_evil) April 30, 2018

In a statement, Facebook’s Chief Security Officer Alex Stamos said that the company quickly investigated the situation and immediately fired the person. Access to sensitive data is logged, and the company has automated systems designed to detect and prevent abuse, Stamos said.

“Employees who abuse these controls will be fired — period.” The firing was first reported by The Wall Street Journal.

This puts yet another question mark over internet companies' use of user data and the difficulty in preventing misuse.

With inputs from Reuters.