What is the most effective method to stop scam subscribers hacking my WordPress site? http://www.adrianchambersmotorsports.com.au
The Registration Honeypot plugin is quite effective at stopping ‘spambots’ from registering on your site:
But if your site has actually been hacked, you’ll need more than a simple plugin. If your site has been hacked, you’ll want to have the experts at Sucuri do a quick scan of your site and if necessary, clean up any malicious code.
Hope this helps!