[IDG] The scammers began to see serious problems with their phishing scams sometime around April.That’s when they started realizing that more and more of their phoney “phishing” e-mails were being blocked. Security researchers had spent the previous year closely studying botnet networks of infected computers and they were getting pretty good at blocking many of the fraudulent e-mail messages that were being sent from these systems.
http://www.pcworld.com/article/155713/.html
http://pcworld.idg.com.au/article/271453/
http://computerworld.com.au/article/271453/
As phishing evolves, criminals switch to malware
[IDG] The scammers began to see serious problems with their phishing scams sometime around April.