"Most companies have done a good job with perimeter security," Neray said. But now there's a growing need for tools that can help users monitor and audit all activity inside their networks, databases and applications, he added.

For instance, Sirva Inc., a Westmont, Ill.-based provider of relocation services, is using an appliance from Mountain View, Calif.-based Reconnex Corp. to help keep tabs on its intellectual property and other sensitive data while it goes through a series of divestitures.

"One of the things that happens after a divestiture is that people take the stuff they are working on to their new companies," said Chuck Shmayel, vice president of infrastructure and security at Sirva.

The Reconnex appliance sits at the network-egress points in each of Sirva's four data centers and monitors traffic to ensure that confidential information doesn't exit the company's networks, either by accident or design.

It isn't just Sirva's own data that is at stake. "As a relocation service, we handle a lot of confidential information on behalf of our customers, and we want to make sure it's protected," Shmayel said.