The Meltdown and Spectre hardware bugs are the worst we’ve seen until now, and while most computer users are protected against the former, if they’re using the latest operating system and software versions for their computers, the latter is a whole different story. Discovered by security researcher Jann Horn, Spectre has two variants, CVE-2017-5715 and CVE-2017-5053, that we currently know about, and while the first one is easier to fix through software updates, the second one needs to be patched at hardware level only by the chip’s manufacturer.