http://bugzilla.spamassassin.org/show_bug.cgi?id=4386





------- Additional Comments From [EMAIL PROTECTED]  2005-06-03 08:03 -------
Subject: Re:   New: New rule suggestion: detect mismatched URIs and onMouseOver

On Fri, Jun 03, 2005 at 04:21:58AM -0700, [EMAIL PROTECTED] wrote:
> So for example (based on a real one, but not verbatim):
> <a href="http://12.98.176.54/billing.ebay.com";
> onMouseOver="status='https://billing.ebay.com/'; return
> true">http://billing.ebay.com/</a>

3.1 already has a rule to flag this specific type of href setup.

> In this example SA could pick up on two things: SA could detect that the link
> contents are themselves in the form of a URI ("http(s?)://" would do), and 
> then
> that the href in the link refers to a URL that differs from that URI. Secondly

It's not that simple.  This has been discussed numerous times already
on users@ and other tickets.  In short, testing shows that assuming
the anchor text URI and the href URI match in ham but not in spam is
completely not valid and FPs wildly.

> the use of onMouseOver in a mail is probably a good indicator of a suspicious
> e-mail, thus warranting some extra score.

Perhaps, I haven't tested any OMO rules.





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