Microsoft, Google, Cisco, Dell Join Facebook’s Legal Battle Against Israeli Hacking Company NSO After WhatsApp Hack Facebook has said that NSO exploited a bug in WhatsApp to help surveil more than 1,400 people worldwide. By Reuters | Updated: 22 December 2020 10:33 IST Microsoft, Google, Cisco, VMWare, and the Internet Association joined forces with Facebook Highlights NSO's spyware was also been linked to the slaying of journalist Khashoggi NSO has denied hacking Khashoggi Tech giants including Microsoft and Google on Monday joined Facebook's legal battle against hacking company NSO, filing an amicus brief in federal court that warned that the Israeli firm's tools were "powerful, and dangerous."