On 2020-08-27 13:15, Rich Kulawiec wrote:
> 3. Captchas are a worst practice in security and should never be used.
> They can be and are defeated at will by any adversary who wants to
> trouble themselves to do so.  They're also user-hostile.  There are much
> better methods available for protecting Mailman instances from abusers.

I've said for some time that traditional captchas are by now almost a
REVERSE test.  Ability to solve them should be taken as stronger
evidence that you are a bot than that you are a human, because bots are
better at solving them than humans are.

Image-style captchas like reCaptcha are better, but they too have a
shocking oversight:  They do not scale well on increasingly-ubiquitous
high-resolution displays.  I'm currently using a 32" 4K monitor, and
even after zooming the page as far as I can, I still sometimes have to
resort to a magnifying glass to be certain whether I'm seeing a
specified object somewhere in the background of one of the images.



-- 
  Phil Stracchino
  Babylon Communications
  ph...@caerllewys.net
  p...@co.ordinate.org
  Landline: +1.603.293.8485
  Mobile:   +1.603.998.6958
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