If your ISP doesn't already block them, you can add these criminals to your firewall rules.
I.P. address block for Russian Business Network:
81.95.144.0/20 #SBL43489
(81.95.144.0 - 81.95.159.255)
And the address blocks for its equally corrupt cousins at Intercage, Inhoster, and Nevacon:
85.255.112.0/20 #SBL36702
(85.255.112.0 - 85.255.127.255)
69.50.160.0/19
(69.50.160.0 - 69.50.191.255)
194.146.204.0/22 #SBL51152
(194.146.204.0 - 194.146.207.255)
