A new speculative execution side-channel vulnerability is called Foreshadow, or L1TF. It’s aimed at program data rather than program instructions. Foreshadow is similar to Spectre in that it leverages speculative execution. Intel says microcode has been developed and pushed live to help mitigate the effects of the vulnerability. Google Cloud Security says the primary danger is that a threat actor could use it to reach across virtual machine boundaries, gaining access to the information belonging to another virtual machine and possibly, another organization.”]
Source: https://www.darkreading.com/application-security/intel-reveals-new-spectre-like-vulnerability