Ultimately, the web is an attack vector that no one is immune to. Did you read the Syria hack recently? Just a skype chat with an attractive opposite-gender is enough to download a piece of malware masquerading as a picture you really want to see. While the human aspect has always been a key element of getting hacked, products that claim to distinguish the good vs. bad are failing big time. And this has been the pillar of enterprise security (classifying good against bad) for the last 20 years and is starting to show its age.