From: "Kelson" <[EMAIL PROTECTED]>
Per Jessen wrote:
Theo Van Dinter wrote:
On Thu, May 31, 2007 at 09:46:56AM +0200, Per Jessen wrote:
I've been looking at what a rot13'ed email-address looks like, and it
doesn't come close to matching the pattern above.
rot13 is a common/well-defined version of a single substitution
cipher. This rule tries to match those, not the rot13 a-m <-> n-z
mapping specifically.
Then why is the pattern very specific wrt '^' and '(' ?
Because it's very common (or at least was at one time) for spammers to
rot13 the target addresses and then do those specific substitutions.
Or base64 or other "obvious" but not rot13 encodings are often used.
{^_^}
