HermeticWiper is data and MBR Wiper that is being targeting Ukraine and is allegedly link to Russia. It intentionally cleans data on a device make it unrecoverable. It also deletes the MBR of the machine so that the operating system wont boot again.

Log4Shell is an Remote Code Execution (RCE) vulnerability (CVE-2021-44228) in one of the most used enterprise Logging product Apache Log4j. Its affecting Apache Log4j versions 2.0 through 2.14.1.