I am running DNN v4.05.03 for several sites right now.  My most popular site is getting several bogus accounts created on it daily.  It is set-up for user accounts to be verified.  The names in the bogus accounts often are european-sounding (whatever that means), and the domains at most times do not appear to be valid.  The accounts never get validated.  In short, it certainly looks like a bot or bots are creating user accounts on my DNN portal. 

My first thought to prevent this sort of thing from happening was to enable CAPTCHA for user registration.  While this has brought the number of bogus accounts down alot, there still appears to be at least one a day getting created. 

Is anyone else experiencing this?  Does anyone know of any additional ways that I can go about preventing this?  Does the Core Team have any future plans to further prevent such abuse of our portals?

Unfortunately, the e-mail addresses appear to be mostly random and/or already unique.   Thanks... 

I hope that is true.  Unfortunately, those sites are hosted by an external web host, so I do not have access to the logs.  I am increasingly more curious if anyone else is experiencing this, but it is encouraging that so far no one else has responded to confirm such activity.  *Whew*  :)