Hello,

> I don't think it is a problem of Security, but it is at least
> a problem of unneeded Information Disclosure.

Yes, it's quite ugly to have a (static) userid in the URL.. Many webmail
systems share this 'design bug' ..

But this is a minor problem: you can't hijack a webmail session with
this information, you'd also need to steal a cookie from the user..


> I personnally think that this is a problem because:
> 1.) You are identifiable via the email address
> 2.) a spammer could use your email address

I doubt that someone will use the referer to identify a user..
It is much easyer to include the email address [or a key] in the
sent link, many spammers are doing this to verify
accounts... and this method works with every MUA


 - Adrian

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