https://www.reuters.com/article/us-facebook-nso-cyber/microsoft-google-cisco-vmware-join-legal-battle-against-hacking-company-nso-idUSKBN28V2WX >Tech giants Microsoft, Alphabet , Cisco, and VMware 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."