PRESS RELEASE

REDWOOD SHORES, CALIF., "March 1, 2010 " Qualys, the leading provider of on demand IT security risk and compliance management solutions, and Imperva, the data security leader, today announced the integration of Qualys' QualysGuard' Web Application Scanning with Imperva's SecureSphere Web Application Firewall (WAF). This combination gives enterprises an ability to deploy a comprehensive security strategy that delivers powerful protection for business-critical Web applications. Savvis, Inc. (Nasdaq: SVVS), a global leader in outsourced internet infrastructure services for enterprises, will provide the Qualys-Imperva integrated solution as part of its hosting and Savvis Symphony cloud infrastructure solutions for enterprises..

"With this integration, Imperva and Qualys are advancing the use of WAF and vulnerability assessments as an integral part of the Secure Development Life Cycle. By using Imperva's WAF Virtual Patching, tightly integrated with Qualys' QualysGuard' Web Application Scanning, customers can quickly shield against exploitation of discovered vulnerabilities," explained Amichai Shulman, Imperva's CTO.

"As attackers focus increasingly on exploiting web applications, organizations need ways to immediately mitigate the underlying vulnerabilities, especially since web applications have a longer patch cycle than operating systems and desktop applications," explained Wolfgang Kandek, CTO of Qualys. "Imperva's integration with QualysGuard helps customers achieve this goal and protect their web applications from attacks until they can patch them fully."

The integration gives customers numerous benefits, including the ability to:

Eliminate emergency fix and test cycles — immediately remediate discovered Web application vulnerabilities via a "virtual patch" without the need for development intervention.

Prioritize Web application firewall alerts —accurate, verified security risks identified by QualysGuard' Web Application Scanning helps precisely identify vulnerabilities and provides greater intelligence for attack correlation.

Build more accurate security and compliance reports — specifically highlight attempts to exploit known vulnerabilities.

Exceed the minimum PCI DSS 6.6 requirements — provide the best protection available against data compromise.

"Imperva and Qualys already enable Savvis to deliver separate, but important security services to our customers," said Chris Richter, vice president, security products and services for Savvis. "The integration of these technologies represents a significant advancement in web-application protection, and Savvis looks forward to offering it as part of our hosting and Savvis Symphony cloud infrastructure solutions for enterprises."

About Qualys

Qualys, Inc. is the leading provider of on demand IT security risk and compliance management solutions " delivered as a service. Qualys' Software-as-a-Service solutions are deployed in a matter of hours anywhere in the world, providing customers an immediate and continuous view of their security and compliance postures.

The QualysGuard' service is used today by more than 4,000 organizations in 85 countries, including 40 of the Fortune Global 100 and performs more than 500 million IP audits per year. Qualys has the largest vulnerability management deployment in the world at a Fortune Global 50 company.

Qualys has established strategic agreements with leading managed service providers and consulting organizations including BT, Etisalat, Fujitsu, IBM, I(TS)2, LAC, NTT, SecureWorks, Symantec, Tata Communications and TELUS.

For more information, please visit www.qualys.com.

About Savvis

Savvis, Inc. (NASDAQ:SVVS) is a global leader in outsourced internet infrastructure services for enterprises. More than 4,000 customers, including 40 percent of the top 100 companies in the Fortune 500, use Savvis to reduce capital expense, improve service levels and harness the latest advances in cloud computing. For more information visit www.savvis.net.

About Imperva

Imperva, the Data Security leader, enables a complete security lifecycle for business databases and the applications that use them. Over 4,500 of the world's leading enterprises, government organizations, and managed service providers rely on Imperva to prevent sensitive data theft, protect against data breaches, secure applications, and ensure data confidentiality. The award-winning Imperva SecureSphere is the only solution that delivers full activity monitoring from the database to the accountable application user and is recognized for its overall ease of management and deployment. For more information, visit www.imperva.com.

For further information, please contact:

Darshna Kamani

Eskenzi PR 44 207 183 2834

[email protected]