Good afternoon all. I have a client who is running DNN 6.2.4 (63) on shared hosting that is getting 1,000 or more users created daily. 

I went in with a 3rd party module to delete them all and removed the "Registration" link from the site but I'm sure what is not going to stop this. 

Anyone else come across this and know how I can start the process of figuring out how this is happening?

Thanks in advance.