WhatsApp has urged its 1.5 billion users to upgrade the app after the Facebook-owned platform discovered a vulnerability that allowed a spyware to be installed on users’ phones via the app’s phone call function.
The spyware was allegedly developed by the Israeli cyber intelligence company NSO Group, reports the Financial Times.
The vulnerability leveraged a bug in WhatsApp’s audio call feature, facilitating the installation of spyware on the device being called whether the call was answered or not.