On Monday, December 21, 2020, Google, Microsoft, Cisco, Github, LinkedIn, VMWare, and Internet Association filed a joint amici curiae brief in support of Facebook in NSO Group Technologies Limited, et al v. WhatsApp Inc., et al. The case is on appeal from the U.S. District Court, Northern District of California, concerning a lawsuit filed by WhatsApp, owned by Facebook, alleging that NSO Group's spyware was used to hack multiple devices through a vulnerability in WhatsApp's messaging service. NSO Group previously argued that it should enjoy sovereign immunity since its tools are sold to foreign governments.
