REvil Ransomware has now a new tentacle for Linux machines. It is caught encrypting Vmware ESXi virtual machine. Linux variant has almost same functionality as of its Windows counterpart.
AgeLocker use AGE (Actually Good Encryption) algorithm for encrypting victims files on QNAP servers, hence the name AgeLocker. It uses X25519, ChaChar20-Poly1305, and HMAC-SHA256 algorithms which makes it a very secure method to encrypt files.
Linux that was assumed to be "safe" from malware is getting attention from attackers. RedXOR is a Linux malware allegedly attributed to Chinese hackers.
PuTTY was primarily written for Windows but with it exponential popularity Port of other operating systems were created.
Spectre is a hardware design flaw in the architectures of Intel, AMD, and ARM processors that allows code running inside a malicious application to break the isolation between different applications at the CPU level and then steal sensitive data from other apps running on the same system.