WhatsApp has fixed a zero-click, zero-day vulnerability that was used to install Paragon's Graphite spyware on targeted devices.
The hacking campaign targeting 90 users, which was suspected to be carried out by Paragon, an Israeli commercial surveillance vendor.
Citizen Lab group from the University of Toronto shared its analysis of Paragon's infrastructure with WhatsApp, which later discovered and mitigated the exploit.
Citizen Lab identified Paragon's tool 'Graphite' through digital fingerprints and certificates, indicating its global spyware operations involving several countries.