This plugin “hides” the WordPress site if traffic is coming from malicious IP or Tor Network (is selected). IP list is updated every 30 minutes from http://iprep.wpmaltor.com/ and http://torlist.wpmaltor.com/ which are using 2 free services: https://www.dan.me.uk/torlist/ for Tor Exit Nodes and http://myip.ms/files/blacklist/csf/latest_blacklist.txt for malicious IP list.