I am experiencing a sudden spate of 'spam' attempts at registration on two PHPBB3 forums I run, one 'private' and one 'public'. The support forums indicate this is an increasing phenomenen. Most of the registrations seem to originate on Russian servers.
Obvious steps have been taken to 'repel boarders' but this is a heads up for anyone else using the system. A normal graphic 'captcha' does not seem to be stopping it and currently a mathematical one is - I guess we are looking at 'humans' with poor mathematical skills?
