[Mailman-Developers] Interesting study -- spam
Chuq Von Rospach
Wed, 20 Feb 2002 13:50:06 -0800
On 2/20/02 1:37 PM, "Damien Morton" <email@example.com> wrote:
> As far as I can see thay are using url/cgi encoding in the email
> address. This is trivial to circumvent, as is using html entities, or
> any other reversible scheme.
With a constantly varying algorithm. So they obfuscate, but they never
obfuscate in a predictable way. Which means if you're a spambot, you have to
look at every byte of every page and attempt to de-obfuscate it in every
possible way to see if it's obfuscated. You CAN do it, but you make it
computationally massively expensive.
Chuq Von Rospach (firstname.lastname@example.org -- http://www.chuqui.com/)
Will Geek for hardware.
No! No! Dead girl, OFF the table!