Russian information security expert at the League of Digital Economy Andrey Slobodchikov said:
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According to the expert, this status is simply explained - it is this messenger that most often reveals critical vulnerabilities.
For example, a recently discovered hole allowed attackers to run arbitrary code on a device and gain full-text access to it.
At the same time, Slobodchikov clarified that less popular messengers can also be subject to critical vulnerabilities. Therefore, users a priori should be careful.
Recall that earlier McAfee experts announceddiscovery of 16 Android apps that make money from fake advertising actions. They forced users to perform certain actions with embedded ads.