If you are using whatsapp… update now and consider swapping to Signal!

Whatsapp on a mobile phone

Whatsapp, never used it never will. But I know many many of my friends do – please do update! Or even better dump it and use Signal messenger.

A security flaw in WhatsApp can be, and has been, exploited to inject spyware into victims’ smartphones: all a snoop needs to do is make a booby-trapped voice call to a target’s number, and they’re in. The victim doesn’t need to do a thing other than leave their phone on.

The Facebook-owned software suffers from a classic buffer overflow weakness. This means a successful hacker can hijack the application to run malicious code that pores over encrypted chats, eavesdrops on calls, turns on the microphone and camera, accesses photos, contacts, and other information on a handheld, and potentially further compromises the device. Call logs can be altered, too, to hide the method of infection.

The issue affects WhatsApp for Android prior to v2.19.134, WhatsApp Business for Android prior to v2.19.44, WhatsApp for iOS prior to v2.19.51, WhatsApp Business for iOS prior to v2.19.51, WhatsApp for Windows Phone prior to v2.18.348, and WhatsApp for Tizen prior to v2.18.15.