Researchers discovered a zero-day zero-click exploit, called FORCEDENTRY, used by the NSO Group to infect Apple devices with Pegasus spyware. The exploit targets Apple's image rendering library and was effective against iOS, MacOS, and WatchOS devices. Apple has released an update to patch the vulnerability, and users are urged to update their devices immediately. The discovery highlights the ongoing issue of mercenary spyware companies facilitating surveillance and espionage activities.