PHP on Windows - Spammers?

Author

Spammers?

Gustav Wiberg

2007-06-14, 4:01 am

Hi there!
=20
Anyone who know who spammers operate? Is the content sent through the 80-po=
rt or what? I want to know for building a better spam-filter in php...
=20
Best regards
/Gustav Wiberg

Geoff Lane

2007-06-14, 7:01 pm

On Thursday, June 14, 2007, 8:19:00 AM, Gustav wrote:

> Anyone who know who spammers operate?
---

I did at one time suffer injection attacks where the spammers used
their own form to take advantage of inherent weaknesses of the PHP
mail() function to inject messages and recipient addresses that
overrode the data in one of my "dial home" forms. I've now hardened up
my scripts considerably and any attempt to inject an email address
into a field that isn't expecting one causes an error message.

Search the Internet for "PHP mail() injection attack" for several
articles that both describe the issues and suggest defences.

HTH,

--
Geoff

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2007-06-21, 11:04 am

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