Since 2016, an advanced threat group that Cisco Talos is tracking has carried out cyberattacks against South Korea and Japan. This group is known by several different names: Tick, Redbaldknight and Bronze Butler.
Although each campaign employed custom tools, reseachers observed recurring patterns in the actor's use of infrastructure, from overlaps in hijacked command and control (C2) domains to differing campaign C2s resolving to the same IP.
Google Project Zero security researcher found a critical vulnerability in WhatsApp messenger that could have allowed hackers to remotely take full control of your WhatsApp just by video calling you over the messaging app.
The vulnerability is a memory heap overflow issue which is triggered when a user receives a specially crafted malformed RTP packet via a video call request, which results in the corruption error and crashing the WhatsApp mobile app. The bug has since been fixed.