Meltdown and Spectre speculative execution security vulnerabilities affect pretty much every piece of silicon in your enterprise, with the possible exception of very old or low-end devices that offer only in-order execution on chip. Older, unsupported operating systems won’t be getting patches, nor will most mobile devices more than a few years old. Spectre can be exploited remotely via web browser; Meltdown vulnerability poses the greatest threat to cloud infrastructure it makes possible, in theory, escape the virtual machine (VM credentials) and harvest sensitive data.”]