https://www.cnet.com/news/7-new-spectre-meltdown-attacks-uncovered-by-security-researchers/

Spectre and Meltdown are vulnerabilities uncovered in the chips made by companies including Intel, Arm and AMD that run essential processes on a computer. These silicon chips handle extremely sensitive data -- like passwords and encryption keys -- meaning it's a big deal if they're left vulnerable to hacks. The issue was widespread because those chips, used in devices made by Apple, Google, Microsoft, Amazon and others, all share a similar structure. 

The new attacks impact AMD, ARM, and Intel CPUs, central processing units, to various degrees, according to ZDNet. The researchers says they've successfully demonstrated the seven attacks with proof-of-concept code (PDF).