Santander, a well-known banking site, has often been the target of phishers. In fact, Santander UK often makes the top-10 list of most popular targets according to Phishtank. Last week, we found a phishing site for the Brazilian branch, santander.com.br, that was receiving traffic from a DNS cache poisoning attack.

This shows just how dangerous DNS cache poisoning can be. Pay close attention to the subtle signs, such as the "secure" indicator in your browser to show the page has been encrypted. If in any doubt actually click on that little padlock and verify the certificate is from who you think it is.