Glupteba Disrupted by Google

Category 3. In December 2021, Google took action to disrupt the Glupteba botnet, a sophisticated botnet which targets Windows machines and protects itself using blockchain technology.

Apache Log4J2 Vulnerability

A new critical remote code execution vulnerability in Apache Log4j2, a Java-based logging tool, was disclosed on 10 December 2021. There is no known proof-of-concept exploit available at this time, but this vulnerability is easy to exploit, and a public exploit is expected soon.