That was what my comment was addressing: What will they do if that happens? Suppose a machine goes offline for a minute then comes back. Datacenter says nothing or says "we have no records of a power issue" or something to that effect. Now what? If Fastmail's software didn't wipe the key from RAM, it may be already compromised. Do they shutdown that colo facility? If so, why are they in the US in the first place?