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FastMail’s servers are in the US – what this means for you

blog.fastmail.fm

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Re: FastMail’s servers are in the US – what this means for you

#4
Note the obvious caveat though:

"There are of course other avenues available to obtain your data. Our colocation providers could be compelled to give physical access to our servers. Network capturing devices could be installed. And in the worst case an attacker could simply force their way into the datacentre and physically remove our servers."

As the colocation providers are based in the U.S., they would be subject to the National Security Letters. FastMail claims this is no different from any other hacking attempt. But in a normal hacking attempt, colocation providers would be free to explain to FastMail the extent of any hacking on their end. Moreover, hackers typically do not have physical access to any data. Even with encryption, physical access opens up a lot of attack vectors that most sysadmins don't anticipate.

Re: FastMail’s servers are in the US – what this means for you

#5
The only real benefit I see here is that your IP won't be easily revealed. That is, given a fastmail account, the e.g. FBI cannot quickly get your login IP, like they can with e.g. Outlook or Gmail. So, for just low-level anti-surveillance, SSL to fastmail might suffice instead of using Tor with Gmail.

Unless you're using PGP or S/MIME, SMTP is still most often unencrypted.

Re: FastMail’s servers are in the US – what this means for you

#6
> There are of course other avenues available to obtain your data. Our colocation providers could be compelled to give physical access to our servers. Network capturing devices could be installed. And in the worst case an attacker could simply force their way into the datacentre and physically remove our servers.

> These are not things we can protect against directly but again, we can make it extremely difficult for these things to occur by using strong encryption and careful systems monitoring. Were anything like this ever to happen we would be talking about it very publically. Such an action would not remain secret for long.

> Ultimately though, our opinion is that these kinds of attacks are no different to any other hacking attempt. We can and will do everything in our power to make getting unauthorised access to your data as difficult and expensive as possible, but no online service provider can guarantee that it will never happen.

This kind of frank disclosure should be highly rewarded. I provided similar frank disclosure text (elsewhere) only to have it whitewashed.

When everyone is underplaying the real limitations it's impossible for people to choose alternative tradeoffs— "Why should I use this slightly harder to use crypto thing when foo is already secure?"— because the risks have been misrepresented. Underplaying the limitations also removes the incentives to invent better protection— "Doesn't foo already have perfect security?".

Re: FastMail’s servers are in the US – what this means for you

#7
So they are saying that they can never get a NSL to turn over information, but where are these servers? Who has the keys to the door of the server room?

So maybe they don't get the NSL, but the people/group/company that is handling the servers might. This seems disingenuous. I could be wrong, but it feels like they are making claims that will dupe people into their service because they feel safe.

Re: FastMail’s servers are in the US – what this means for you

#8

Note the obvious caveat though: "There are of course other avenues available to obtain your data. Our colocation providers could be compelled to give physical access to our servers. Network capturing devices could be installed. And in the worst case an attacker could simply force their way into the datacentre and physically remove our servers." As the colocation providers are based in the U.S., they would be subject…

If they mount webcams and other sensors inside the cabinet, they could detect unexplained access to their servers. Not sure what it'd really accomplish. The colo provider would either say "tech mistakenly opened that cabinet" or "no comment". The only real defense is to assume any such access is a breach and have servers immediately overwrite FDE keys in RAM and power off - and if they were that committed, they wouldn't host in the US in the first place.

Re: FastMail’s servers are in the US – what this means for you

#9

Note the obvious caveat though: "There are of course other avenues available to obtain your data. Our colocation providers could be compelled to give physical access to our servers. Network capturing devices could be installed. And in the worst case an attacker could simply force their way into the datacentre and physically remove our servers." As the colocation providers are based in the U.S., they would be subject…

If they mount webcams and other sensors inside the cabinet, they could detect unexplained access to their servers. Not sure what it'd really accomplish. The colo provider would either say "tech mistakenly opened that cabinet" or "no comment". The only real defense is to assume any such access is a breach and have servers immediately overwrite FDE keys in RAM and power off - and if they were that committed, they would…

Full disk encryption would be another option, with the key being obtained over a secure channel from servers hosted remotely before booting to the real system. Then, as long as they can detect whether the server asking for the key has been compromised, I think it should be pretty safe. (Not a security researcher though, I wouldn't bet money on it.)

Re: FastMail’s servers are in the US – what this means for you

#10

So they are saying that they can never get a NSL to turn over information, but where are these servers? Who has the keys to the door of the server room? So maybe they don't get the NSL, but the people/group/company that is handling the servers might. This seems disingenuous. I could be wrong, but it feels like they are making claims that will dupe people into their service because they feel safe.

They do in fact mention that in the article:

> There are of course other avenues available to obtain your data. Our colocation providers could be compelled to give physical access to our servers. Network capturing devices could be installed. And in the worst case an attacker could simply force their way into the datacentre and physically remove our servers.

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