Tizor Expands Series B Round to $15 Million and Introduces Industry's First Activity Correlation Capability for Compliance and Security During RSA

-- Mantra Delivering Industry-First Capability to Tie Front-End User Activity to Back-End Data Stores --

MAYNARD, Mass., February 7, 2006 – Tizor, the leading provider of Activity Auditing solutions for compliance and data theft protection in the data center, today announces that it has closed additional financing in its oversubscribed Series B round, bringing the total to $15MM. The additional funding will bring to market additional capabilities for Mantra™, the industry’s first solution for correlating data activity to tie front-end user activity to backend data stores--across the widest spectrum of databases, file servers and web servers, providing unmatched accountability and insight in securing and auditing critical data assets.

An experienced early-stage investor with previous investments in security and compliance companies including Thor Technologies and Brabeion Software, Longworth Venture Partners will be joining the Series B investor team led by Hummer Winblad. Longworth joins other Tizor investors including Masthead Ventures, Navigator Technology Ventures and Common Angels.

"Until recently, the perimeter was the focus of information security, now the core is the new frontier. We see Activity Auditing as a compelling approach for addressing this critical business need," said Nilanjana Bhowmik of Longworth Venture Partners. "We evaluated a number of companies in this market and believe that Tizor, with its enterprise class product and experienced team, will lead the next generation of core security solutions."

Showcasing Correlation Capability During RSA

Since introducing Mantra in the third quarter of 2005, Tizor has created the standard for Activity Auditing in the data center, driven by market drivers such as compliance, data privacy and trust. Now with industry-leading correlation capabilities, Tizor is uniquely positioned to further extend Activity Auditing to allow activities from front-end applications such as web servers to be correlated to backend stored data activity in platforms such as databases or file servers, enabling a seamless single point of data integration, correlation and reporting. Tizor will be demonstrating this new capability in San Jose during the RSA Conference and announcing its general availability in Q2 2006.

“Tracking user activity from front-end applications such as web servers to critical data activity has been a significant problem in the security and compliance industry,” said Prat Moghe, founder and CEO of Tizor. “Tizor’s patent-pending Mantra platform is the first solution to not only audit the broadest range of data stores, but also to tie them to front-end activity, bringing a new threshold to intelligence and accountability in Activity Auditing.”

About Tizor
In a world driven by open networks, outsourcing and the growing risks of information theft, organizations require a higher level of insight and control over user activity with mission critical applications and data. Founded by former Bell Labs researchers, Tizor provides true activity auditing solutions for compliance and security enabling organizations to confidently support their business initiatives with technology. Activity Auditing, rapidly becoming an operational imperative, is the only way to know what users are doing with mission critical applications and data, without requiring host logging or degrading the performance of deployed applications. Headquartered in Maynard, Massachusetts, Tizor is venture financed and led by industry veterans in networking, security, software and systems management. More information on Tizor can be found at www.tizor.com.

About Longworth Venture Partners
Longworth Venture Partners is a Boston-based venture capital firm that invests in early-stage software, internet and media companies. For over twenty years, the Longworth team has founded, built and led investments in some of the most innovative and successful technology companies. The firm combines a proven track record of entrepreneurial and operating success with top venture investing performance to support entrepreneurs in building the next generation of technology leaders. For more information please visit www.longworth.com.