The tech company lost a massive privacy case involving the Flo app that has raised huge questions about how health apps are secretly being used.

Meta lost a major privacy trial on Friday, with a jury in San Francisco ruling that the Menlo Park giant had eavesdropped on the users of the popular period-tracking app Flo. The plaintiff’s lawyers who sued Meta are calling this a “landmark” victory — the tech company contends that the jury got it all wrong.

A federal jury found on Friday that Meta violated the California Invasion of Privacy Act, the state's wiretap law, by collecting data from a period-tracker app without user consent. Plaintiffs in a class-action case proved by a preponderance of evidence that Meta intentionally eavesdropped on and/or recorded conversations using an electronic device,

The social network disagrees with verdict and vows to explore all legal options A jury has unanimously found Meta guilty of violating the California Invasion of Privacy Act by using data from menstruation and fertility app Flo to sell advertising to the social network.

The California class action suit alleged that the Facebook parent company had collected data from the Flo Health period tracking app and used it without consent for targeted advertising.