https://www.pcgamer.com/malware-based-on-meltdown-and-spectre-could-be-coming-soon/

For years, there was no attempt to leverage recently disclosed vulnerabilities that exist in a wide range of processors. That's obviously because hardly anyone knew they existed. But now that Spectre and Meltdown are public knowledge, you can expect that to change. The question is, when?

A report at Bleeping Computer points to several instances of security researchers recently finding malware samples based on the newly disclosed security flaws. AV-Test, for example, says it has detected 139 of them, up from 119 samples a week ago.