[Lazarus] Forum under attack

[Mark Morgan Lloyd]

Marc Weustink wrote:

>> that and possibly even special questions that only humans can answer...
>> what forum software is it? my phpBB3 gets beat on daily but no spammers
>> have been successful at getting in... then again, my IDS/IPS also has
>> special rules to detect such attempts and blocks them at the perimeter
>> so they don't beat the forum server to death ;)
> 
> This doesn't prevent password guesses.

How about a Capcha that was a coding problem?

When I worked for a mainframe company I sat a developer's aptitude test, 
and one of the questions showed a set of nested functions in a 
Pascal-derived language with the question being what value does variable 
A have at point X. I wonder whether that type of problem could be turned 
out by software, and whether they could be chosen to be difficult enough 
to defy automated solution but not so difficult as to deter new users?

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]