In January 2018, a consortium of security researchers disclosed two ominously-named vulnerabilities found in nearly all modern computer processors. Meltdown, Spectre, and the other related vulnerabilities are significantly more dangerous and useful to an attacker in a virtual environment versus a non-virtual server or desktop. In response, I expect to see Intel and AMD eventually create separate processor lines to protect cloud applications from this threat. An attacker with code execution on a physical desktop or server usually has easier ways to elevate their privileges and access sensitive data from other applications.”]
Source: https://www.darkreading.com/cloud/processor-vulnerabilities-put-virtual-workloads-at-risk