Hadmut Danisch wrote:
On Fri, Mar 07, 2003 at 06:54:08PM -0500, David F. Skoll wrote:
I use the following algorithm in CanIt. It is by no means perfect,
but it's pretty good:
- Skip a line starting "Dear "
- Do a SHA1 hash on what's left.
This won't work.
It works for certain classes of spammer. It can be made significantly
better (eg: stripping HTML tags and comments, stripping
non-alphanumerics, not only collapsing whitespace, but _removing_ it),
but it's still trivially bypassable.
Good for the low rent spammers. Not enough for Ralsky. Not enough for
some of the ratware out there.
[ie: there are "pay services" which tune your email to get past
SpamAssassin. Not necessarily "bad", unless the intent is to spam as
opposed to minimizing the possibility of interference with legit
opt-in/confirmed bulk email.]
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