[mtgx]

Meltdown is not a variant of Spectre. Spectre itself has two variants.

And Meltdown was the easiest to exploit. Spectre is "bad" because it affects everyone, but it's less exploitable than Intel's Meltdown.

[dogma1138]

Meltdown is very much a variant of this, 3 variant exist 3.1 if you consider Meltdown on ARM.

Meltdown is the easiest to exploit and the easiest to fix it’s also the least scary one as far as compromises go.