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Apple Inc. said it patched a security flaw in its Messages app after security researchers determined that Israel-based NSO Group used it to “exploit and infect” the latest devices with spyware.
The flaw, disclosed Monday by Citizen Lab, allowed a hacker using NSO’s Pegasus malware to gain access to a device owned by an unnamed Saudi activist, according to security researchers. Apple said the flaw could be exploited if a user on a vulnerable device received a “maliciously crafted” PDF file.
The flaw was a “zero-day” vulnerability, a term that refers to recently discovered bugs that hackers can exploit and haven’t
