Tell me the algorithms for protection against spam robots, in addition to captcha, which for the current year is no longer protection (cracked).

Closed due to the fact that off-topic participants are Regent , aleksandr barakin , Visman , Saidolim , Kromster 7 Sep '15 at 12:38 .

It seems that this question does not correspond to the subject of the site. Those who voted to close it indicated the following reason:

  • " Questionnaires are forbidden on Stack Overflow in Russian . To get an answer, rephrase your question so that it can be given an unambiguously correct answer." - Regent, aleksandr barakin, Visman, Saidolim, Kromster
If the question can be reformulated according to the rules set out in the certificate , edit it .

  • five
    properly configured firewall, moderated. But the surest way from spam bots is to turn off the site. - KoVadim

1 answer 1

Generator questions. For example, historical facts. But better questions on the subject of sites. For example, it would be appropriate to place photos of resistors on the site of electrical engineering, and in response should write the resistance correctly. Well, etc.