Sorry for the question that borders on "Seekers of CGI Wisdom", but I don't have anywhere better to turn, and this is
being implemented in Perl.
I'm writing a specialized shopping-cart-like application. Are there any non-obvious security-related tips (i.e. besides "use taint checks well" and "encrypt credit card numbers") or other tips on things that I should look out for?
(As an aside, I wrote three or four modules while creating this app, so you can expect to see a few modules hitting the CPAN soon.)
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