That doesn't answer the question, of course; it's just a sales pitch for the proverbial tiger-proof rock. To reiterate: how long does s/he have to spend on a shady site before a successful SPECTRE exploit takes place?
If this were actually happening in the real world, maybe we'd know.
If this were actually happening in the real world, maybe we'd know.
But it's not, so we don't, and life goes on.
Albeit slowly.