Unpatched design flaw in E2E encryption tracks everything you do

End to end encrypted messaging apps, such as WhatsApp and Signal, have a shocking, high severity unpatched side channel vulnerability, that can be exploited by any government, intelligence agency, law enforcement agency, and even private company or individual person, the ability to build a complete profile on you, including what devices you use, for how long you use them, with whom you are communicating, your daily sleeping habits, working habits, when you physically move, when you are at home, when you are on Wi-Fi vs cellular data, the exact times and durations of when you make phone calls, and so much more, without knowing anything other than your phone number. Whether you are a pen tester, security researcher or cyber security expert, I hope you will find this attack as fascinating as I did. Daniel Boctor reports.