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WhatsApp discovered and fixed a vulnerability in its voice-over-internet-protocol calling feature that enabled a third-party company to install spyware on users’ phones.
The Facebook-owned messaging application identified the vulnerability earlier this month and fixed it within 10 days, making changes to its infrastructure in order to disable this attack from taking place.
WhatsApp would not share a specific total of people potentially affected, only saying it suspects that the number is small due to the complexity involved in deploying it.
A spokesperson said, “WhatsApp encourages people to upgrade to the latest version of our app, as well as to keep their mobile operating system up to date, in order to protect against potential targeted exploits designed to compromise information stored on mobile devices.