PRESS RELEASE

Redwood Shores, Calif., – May 18, 2010 – Imperva, the leader in data security, today announced the availability of its SecureSphere Virtual Appliances to accommodate the unique data security needs of dynamic and virtualized enterprise environments. The SecureSphere Virtual Appliances provide the same best-of-class security protection, compliance and risk management of Imperva's hardware-based solutions as well as flexible, fast deployment, enabling organizations to quickly provision and configure new security services.

"Today's secure datacenters aren't all virtual or all iron alliances – having the flexibility to choose virtual or hardware solutions based on their particular business and risk needs is what is really needed," said Gartner Research Vice President Greg Young. "Enterprises prefer having virtual and iron managed under a single console both for management and to monitor for attacks."

Imperva's SecureSphere Virtual Appliances provide web application and database firewalls as well as database activity monitoring and can be installed on an organization's preferred hardware of choice running VMWare ESX, allowing them to benefit from reduced capital and operational costs. The virtual appliances offer enhanced inspection and protection of web and database servers within a VMware ESX server virtual network and support VMware VMotion to ensure reliable disaster recovery and workload migration scenarios.

"We've seen increasing demand for a virtual offering from our MSSP, hosting and telecommunications customers, in particular," said Amichai Shulman, CTO of Imperva. "Our SecureSphere Virtual Appliances offer the same level of data security protection as our hardware solutions and enable us to accommodate their requirements for deployment flexibility." 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.