[Cryptography] Encryption opinion

Stephan Neuhaus stephan.neuhaus at tik.ee.ethz.ch
Mon Aug 25 07:32:41 EDT 2014


On 2014-08-25, 12:50, ianG wrote:
> Phishing is an MITM.

Except that the M isn't ITM in the case of phishing.  Phishing is not so
much a Man In The Middle, it's more a Man On The Sidelines That Looks
Very Much Like Bob, or MOTSTLVMLB, but good luck pronouncing that.

> So it turns out that HTTPS protects against a class of MITMs, not all
> MITMs.  As the easiest MITM is outside HTTPS, what is the point of
> protecting MITMs at all?

Not sure if sarcastic or serious, but HTTPS isn't useless just because
it doesn't protect against phishing.

> What it distracts from is:  protecting the user.

We're very much on the same page here.

> And, do you think that if they browsers had said "we must eradicate
> phishing!" they would have succeeded?  Of course the would.

I'm not sure.  It's very hard (at least NOW it's very hard) to come up
with a way to tell users that a site is probably a phishing site without
confusing them even more than they already are.

> I don't understand how they did it, but they managed to forget the user.
> Entirely.  Industry-wide cognitive dissonance allowed everyone from
> IETF to vendor to CA to audit to proceed happily without addressing
> phishing [0].  How do you explain that?

Again, I'm on the same page as you, so I'm not going to "explain that"
:-) In my original post I merely pointed out that crypto won't stop Eve
from dressing up as Bob while still showing credentials that say
correctly that she's Eve.

Fun,

Stephan


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