Flooded with spam membership requests

[probeman]

We're getting flooded with spam membership requests (see image attached below). I've never seen it this bad before.  We already installed the latest Stop Forum Spam mod and it didn't help at all.

Is there anything else we can do?

[Aleksi "Lex" Kilpinen]

In my experience, Stop Forum Spam is really good, the built in security questions are very good too, and combined they work great.

[vbgamer45]

I am  fan of hcatpcha https://custom.simplemachines.org/index.php?mod=4255

Or just using a good set of questions and answers.

[probeman]

In my experience, Stop Forum Spam is really good, the built in security questions are very good too, and combined they work great.

I'm already "requiring verification on registration page" and using reCaptcha.

I don't see any "built-in" "security questions".  By "security questions" do you mean the "Verification Questions" on the Stop Forum Spam admin page? 

It says "You should choose questions which relate to the subject of your forum. Genuine users will be able to answer these questions, while spam bots will not."

Is that what you mean by "built-in"?

[Aleksi "Lex" Kilpinen]

Admin -> Configuration -> Anti-Spam -> Verification Questions
https://wiki.simplemachines.org/smf/SMF2.1:Anti-Spam

[Kindred]

and note, you should have 20-30 GOOD questions as the queue.  Ask 1 or 2 on registration -- and be ready to change the whole set if you see spambots starting to get through after some time.

[Dave J]

Try this https://custom.simplemachines.org/index.php?mod=4278

I haven't had any spam membership since adding it to my site