Ranked in the Top Ten of 50 Finalists

Redwood Shores, CA – March 10, 2011 – the leader in data security, has been named to The Wall Street Journal’s The Next Big Thing list which seeks to identify and rank the top 50 venture-backed companies across all industries that have the capital, executive experience and investor know-how to succeed. Imperva, ranked in the top 10, was selected from a pool of more than 5,000 companies and ranked based on proprietary data from Dow Jones VentureSource and input from Dow Jones VentureWire’s reporters and editors.

“Venture capitalists are always looking for companies with a new idea that will prove powerful enough to explode into the marketplace,” said Alan Murray, deputy managing editor of The Wall Street Journal. “The Next Big Thing highlights companies that we believe are worth watching and have a chance to make waves in their industry.”

The Next Big Thing is an annual ranking published by The Wall Street Journal. To be eligible for the ranking, a company must be based in the U.S., have raised an equity round of financing in the three years ended Nov. 30, 2010 and have a valuation of $1 billion or less. The ranking was calculated by applying a set of four financial criteria: the track records of success for both a company’s founders and management; track records for the investors on its board; the amount of capital raised in the last three years; and the percentage change in a company’s valuation in the last year. Dow Jones VentureWire reporters and editors also provided their perspective and expertise beyond the numbers.

“Imperva was founded on a unique understanding of the threat to corporate and customer data,” said Imperva CEO and cofounder, Shlomo Kramer. “We have a strong history of innovation in data security and the company has experienced rapid growth, marking another record year in 2010. The company is poised for continued success in 2011.”

To view The Next Big Thing ranking, visit: http://online.wsj.com/article/SB10001424052748703300904576178673309577828.html.

About Dow Jones

Dow Jones & Company is a global provider of news and business information and a developer of technology to deliver content to consumers and organizations across multiple platforms. Dow Jones produces newspapers, newswires, Web sites, apps, newsletters, magazines, proprietary databases, conferences, radio and video. Its premier brands include The Wall Street Journal, Dow Jones Newswires, Factiva, Barron’s, MarketWatch, SmartMoney and All Things D. Its information services combine technology with news and data to support business decision making. The company pioneered the first successful paid online news site and its industry leading innovation enables it to serve customers wherever they may be, via the Web, mobile devices and tablets. The Dow Jones Local Media Group publishes community newspapers, Web sites and other products in six U.S. states. Dow Jones & Company (www.dowjones.com) is a News Corporation company (NASDAQ: NWS, NWSA; ASX: NWS, NWSLV; www.newscorp.com).

About Imperva

Imperva is a pioneer and leader of a new category of data security solutions for high-value business data in the data center. With more than 1,300 end-user customers and thousands of organizations protected through cloud-based deployments, Imperva’s customers include leading enterprises, government organizations, and managed service providers who rely on Imperva to prevent sensitive data theft from hackers and insiders. The award-winning Imperva SecureSphere identifies and secures high-value data across file systems, web applications and databases. For more information, visit www.imperva.com, follow us on Twitter or visit our blog.

Forward Looking Statements

Certain statements contained in this press release may be forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Any such statements that are not purely historical are forward-looking statements, including, without limitation, statements regarding trends or projections related to our business and our expectations, beliefs, intentions or strategies regarding the future. These statements are subject to known and unknown risks, uncertainties and other factors, which may cause our actual results to differ materially from those implied by the forward-looking statements. We undertake no obligation to update any of the forward-looking statements contained herein after the date of this presentation, whether as a result of new information, future events or otherwise.

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Imperva and SecureSphere are registered trademarks of Imperva, Inc. All other brand or product names are trademarks or registered trademarks of their respective holders.

Press Contacts

Investor Contact

Seth Potter
ir@imperva.com
Tel: (650) 832-6032