LONDON, April 22 Reuters Gay dating app Grindr is facing a mass data protection lawsuit in London from hundreds of users who allegedly had their private information, including HIV status, shared with third parties without consent, a law firm said on Monday.

Austen Hayes, which said the lawsuit is being filed at London39;s High Court, said thousands of Grindr users in the United Kingdom may have been affected.

The firm alleges users39; highly sensitive information, including HIV status and the date of their latest HIV test, were provided to third parties for commercial purposes.

Grindr said in a statement provided to the Guardian that it planned to respond vigorously to this claim, which appears to be based on a mischaracterisation of practices from more than four years ago.

Austen Hayes said around 670 people had signed up to the lawsuit over breaches said to have taken place between 2018 and 2020, with potentially thousands more joining the case.

Austen Hays39; Managing Director Chaya Hanoomanjee said in a statement Grindr owes it to the LGBTQ community it serves to compensate those whose data has been compromised and have suffered distress as a result, and to ensure all its users are safe while using the app, wherever they are, without fear that their data might be shared with third parties.

Grindr did not immediately respond to a request for comment. The Guardian reported a Grindr spokesperson as stating We are committed to protecting our users data and complying…