This cloud security product was highlighted at RSA conference:

Cloudlock – New Cloud Security product introduced at RSA

QUOTE: “CloudLock was founded with a vision of protecting information wherever it sits,” said Zimmerman. “In particular we protect data in the cloud. We focus on Enteprise and mid-market, but can scale down to hundreds of users in a company.” Zimmerman described three core pillars of cloud security. Business wants to stay agile and productive. End users want to collaborate and create information. IT needs to balance the needs of both while managing requirements such as compliance and document retention.

CloudLock identifies all documents and content created and shared in the business, for all users. With its just-announced Content-Aware Security Policy Engine, administrators can control just how data is shared. The service also provides an immutable audit trail, which can be an important legal benefit. An online dashboard gives the administrator a high-level view, with the ability to drill down all the way to an individual change on a single document.