On Sat, Dec 15, 2012 at 12:25 AM, Stephen J. Turnbull wrote:
> Mark Sapiro writes:
>
> > The asking of a question which requires an "obvious to a human but
> > extremely difficult to a machine" answer is probably the best
> > defence as long as the questions and answers aren't fixed over many
>
Richard Damon writes:
> These methods are designed to repel "most" attacks.
Sure, that is understood. The problem is that if a particular method
is recommended here, there will be a request to add it to Mailman. At
that point it becomes worth breaking the defense.
> The idea is these bots ar
On 12/14/12 10:58 PM, Mark Sapiro wrote:
> Richard Damon wrote:
>> For other types of bots, having a key on the page that is needed to be
>> returned will help, as it will catch bots that "know" what the
>> subscription form looks like and just go around trying to submit it.
>> Even better is to gi
Mark Sapiro writes:
> The asking of a question which requires an "obvious to a human but
> extremely difficult to a machine" answer is probably the best
> defence as long as the questions and answers aren't fixed over many
> Mailman installations.
That's a great idea, actually! How about a s
Richard Damon wrote:
>
>For other types of bots, having a key on the page that is needed to be
>returned will help, as it will catch bots that "know" what the
>subscription form looks like and just go around trying to submit it.
>Even better is to give out different keys each time, and checking tha
