A great and free way to prevent your system and networks from phishing attacks is to route your DNS through www.opendns.com
The website says it all- Screenshot belongs to www.opendns.com .It handles more than 9.4 billion DNS requests daily.
Nice and Impressive stuff – www.opendns.com offers this service especially for DNS kind of attacks and botnet attacks specifically.By authenticating the website it thus helps your network from accidently downloading any malware or Trojans –right at the entry stage itself.
