Hackers could have full access (!) to everything on the phones of WhatsApp users, writes Telegram chief Pavel Durov on his Durov's Channel.
Last week, this was possible through a security issue disclosed by WhatsApp itself.
All a hacker had to do to control your phone was send you a malicious video or start a video call with you on WhatsApp.
You are probably thinking "Yeah, but if I updated WhatsApp to the latest version, I am safe, right?"