Intel and industry partners have unveiled a series of vulnerabilities and exploits known as RIDL (or Rogue In-flight Data Load), ZombieLoad and Fallout, but you can call them MDS attacks, or Microarquitectural Data Sampling. They have a similar nature to the Meltdown and Specter vulnerabilities that appeared in early 2018, and may leak data that should be safe in Intel processors since 2008.
How serious are these? security failures? According to Intel they have a “low or medium” level, but according to the researchers, the vulnerabilities can be worse than Specter, although not as much as Meltdown. These come to assert that to avoid them, hyperthreading on Intel CPUs should be disabled. Intel thinks differently, but on the other hand, even ninth generation processors are affected. Apparently the flaws were “known” ” for more than a year, but Intel was working with researchers and software companies to try to develop preventive measures.
As with Meltdown and Specter, the measures will not particularly affect the performance on home computers, but in the case of the data center equipment, their performance could be reduced by 8 or 9%. If you want to check if your computer is vulnerable (possibly yes), you can download a tool on the MDS attacks page. In principle these exploits should not pose much danger to your PC as long as you maintain the usual precautions, such as not download suspicious files and pass the antivirus frequently. Finally, we must remember that AMD processors are free of risk, for now.