I don't recall the first time I heard the term "extrusion prevention system." It was, I think, an effort on the part of some marketer to tie the notion of preventing data from unauthorized exit (extrusion) from the enterprise to the notion of unauthorized entry (intrusion). Very clever.

No matter how much things change, they stay the same. As I have pointed out, there have been massive changes in security drivers over the past 12 months. The changes have generated a new set of challenges, but, even though our encryption innovator has done a first-rate job of addressing them over the past year, the new issues are generating a sort of déjà vu picture of the encryption market.

The big question I had for Tumbleweed was, "What is email security?" Over the past two years, as we have passed products through SC Labs, I have noticed that the vendor public relations folks who we talk to seem to have a hard time differentiating between the many aspects of threats associated with email.

So far, we have been concerned with tools that manage security and move information around. This category addresses the data itself. Data is, after all, the reason we implement security in the first place. Protecting the infrastructure and protecting the data both are necessary to ensure that our valuable information is not compromised.