nanog mailing list archives

Re: gmail security is a joke


From: Owen DeLong <owen () delong com>
Date: Wed, 27 May 2015 14:19:13 +0200


On May 26, 2015, at 6:11 PM, Saku Ytti <saku () ytti fi> wrote:

On (2015-05-26 17:44 +0200), Owen DeLong wrote:

Hey,

I think opt-out of password recovery choices on a line-item basis is not a bad concept.

This sounds reasonable. At least then you could decide which balance of
risk/convenience fits their use-case for given service.

OTOH, recovery by receiving a token at a previously registered alternate email address
seems relatively secure to me and I wouldn???t want to opt out of that.

It's probably machine sent in seconds or minute after request, so doing
short-lived BGP hijack of MX might be reasonably easy way to get the email.

If someone has the ability to hijack your BGP, then you’ve got bigger problems than
having them take over your Gmail account.


Recovery by SMS to a previously registered phone likewise seems reasonably secure
and I wouldn???t want to opt out of that, either.

I have tens of coworkers who could read my SMS.

That’s interesting… Why do you choose to give access to your personal SMS messages
to so many of your coworkers?


Really, you don???t need to strongly authenticate a particular person for these accounts.
You need, instead, to authenticate that the person attempting recovery is reasonably
likely to be the person who set up the account originally, whether or not they are who
they claimed to be at that time.

As long as user has the power to choose which risks are worth carrying, I
think it's fine.
For my examples, I wouldn't care about email/SMS risk if it's
linkedin/twitter/facebook account. But if it's my domain hoster, I probably
wouldn't want to carry either risk, as the whole deck of cards collapses if
you control my domains (all email recoveries compromised)

We agree that different risks are appropriate for different levels of sensitivity.

Owen


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