Meta won its case in December after a ruling that the spyware company used Pegasus to target "over a thousand" WhatsApp users.

The case caps a six-year battle between the social media giant and the surveillance firm, casting an unusual amount of light on the spyware industry.

The Israeli electronic surveillance company NSO Group was ordered to pay $167 million in damages to WhatsApp and its parent company Meta, bringing a close to six years of litigation.