On Monday 28 Apr 2008, Douglas Knudsen wrote:
> Tom, you are merely suggesting that it is possible that a user could have a
> man-in-the-middle virus/proggy running unbeknownst to them?

I belive the original problem was that end users might try and write their own 
client, using the same services provided for the 'official' Flex client i.e.
"How do we make sure no unauthorized consumers succeed in getting data back 
from our web service calls".

In which case, I was just pointing out SSL isn't a defence against that sort 
of threat, and further - so what ? 'Good luck to them'. 

If the OP meant 'How do we make sure only customers can succeed in getting 
data back, and that they only see what they should' then some sort 
of "login(user,pass):TokenString" method that associates a time-limited token 
with a username, and a matching 'getUserForToken(TokenString):user' method in 
each remote method should do the job, for instance.
You might want to run *that* over SSL to stop non-customers stealing a 
customer's password, but in the real world its rare to have a full blown 
man-in-the-middle attack against your service that the end user *isn't* aware 
off.

There are Trojan keyloggers, of course, that specifically look for HTTPS 
traffic to popular web sites (banks), and then switch on an SSL proxy...

-- 
Tom Chiverton
Helping to authoritatively conquer user-centric initiatives
on: http://thefalken.livejournal.com

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