Is there a wordpress plugin or service that distinguishes a jumbled character set from a name?

Question

Fight against spam

Recently, forms on the site from different IPs began to receive false applications with a random set of characters instead of a name. Google captcha is passed, messages are typed explicitly manually. I would like to filter them before sending them to the mail. Is there a plugin for Wordpress or a service with an API that can distinguish between a set of characters typed by accidental keystrokes from a name, including one typed in transliteration?

Answer 1

WAF, increase the threshold for ReCAPTCHA (I hope you have version 3 or enterprise, and not a stupid image clicker), implement verification in the code, add verification of the email specified during registration. Ban by useragent and IP exponentially for every 3 errors from one useragent+IP for one account.
Alternatively, if you can really see what they are typing with their hands, then they will get tired of typing, generating mail, changing ip and user agent. Screw machine learning. Implement JS from Group IB or Yandex. Yes, there are a lot of things, you just want a magic plugin, maybe it is, I don’t argue.