funsec mailing list archives

Re: Public Policy and Consumer ISP Hygiene (was Comcast pop-ups)


From: Dan White <dwhite () olp net>
Date: Fri, 16 Oct 2009 12:04:08 -0500

On 16/10/09 07:56 -0400, Rich Kulawiec wrote:
If you're relaying spam, then it's [in part] *your* spam.  Everyone involved
in propagating and supporting abuse has to take a share of the blame:
the spammer who paid for it, the botnet operator who generated it, the
user who allowed their system to be hijacked, the network operator
who transited the traffic, the mail system operator who relayed the message,
the web site hoster providing services, everyone.  Nobody gets a pass.
Nobody gets to evade their share of responsibility.

So if I have a customer on Facebook that sends sPaM to another Facebook
user (that happens to be using AOL), do I or AOL get the blame? No, even
though we blindly relayed that message.

SMTP needs to go away, and be replaced by something that resembles
end-to-end messaging passing, rather than the horrible touchy feely
pseudo-chain-of-trust that it is today.

And even if did, that would do absolutely nothing to solve the problem
we currently face (i.e. 100M+ zombies): it'd just shift it to another
protocol.  And while SMTP abuse is one of the more visible external
symptoms of the underlying security problem, it's by no means the
only one and probably not even the most important, given that we
developed quite effective defenses against it years ago.

I'm proposing a little more thinking outside the box here. SMTP does need
to go way, and be replaced by something better: Something that does not
inherently suffer from the problems of SMTP today, but is based on
something with better two-way trust.

If I have a friend that gets caught up in a 100M+ zombie attack, then
I'll just suspend my trust with that friend until he gets his act together.
I'll probably get one SpAm from him, maybe two, before I get the idea.

I should not be concerned about the other 99,999,999 other zombies.

-- 
Dan White
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