Qualys Named One of America's Fastest-Growing Private Companies by Inc. Magazine for the Second Consecutive Year

REDWOOD CITY, CALIF. - September 18, 2008 - Qualys®, Inc., the leading provider of on demand IT security risk and compliance management solutions, has been named one of America’s fastest-growing companies by Inc. Magazine for the second consecutive year. The recognition also highlights Qualys as the 25th-fastest growing security company. With 323 percent sales growth over the last three years, Qualys continues to benefit from the increased adoption of its Security-as-a-Service (SaaS) model by large enterprises to SMBs worldwide.

“Being recognized by Inc. Magazine as one of the Inc 5000 is a testament to the increased global adoption of the SaaS model,” said Philippe Courtot, CEO and chairman of Qualys. “We expect our growth to continue as economic realities force organizations to re-assess their IT security budgets, and draining licensing models for a solution that offers cost, deployment and integration efficiency. Thank you to Inc, Magazine for the honor and to our customers and partners for embracing and seeing the SaaS value as that is what has put us where we are today.”

Founded in 1999, Qualys pioneered security-as-a-service and is the first and only company to deliver a suite of security, risk and compliance solutions through an on-demand delivery model. Qualys’ flagship product, QualysGuard®, allows organizations to strengthen the security of their networks and conduct automated security audits to ensure compliance with policies and regulations. Today QualysGuard is the widest deployed security on-demand solution in the world, performing over 200 million IP audits per year with 3,500 subscribers, 35 Fortune 100 companies and over 240 Forbes Global 1000 companies.

“Our second annual Inc. 5000 continues the most ambitious project in business journalism,” said Inc. 5000 Project Manager Jim Melloan. “The Inc. 5000 gives an unrivalled portrait of young, underreported companies across all industries doing fascinating things with cutting-edge business models, as well as older companies that are still showing impressive growth.”

About Inc. 500/Inc. 5000 Conference

The 2008 Inc. 5000 list measures revenue growth from 2004 to 2007. To qualify, companies must be U.S. based and privately held, independent – not subsidiaries or divisions of other companies – as of December 31, 2007 and have had at least $200,000 in revenue in 2004 and $2 million in 2007.

Qualys will be honored as a member of the Inc. 5000 list at the Inc. Conference and Awards Ceremony on September 18-20, 2008 at the Gaylord National Resort and Convention Center in Washington, D.C. Complete information on this year’s Inc. 5000 can be found at www.inc.com/inc5000.

About Inc.com/ Inc

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About Qualys

Qualys, Inc. is the leading provider of on demand IT security risk andcompliance management solutions – delivered as a service. Qualys’Software-as-a-Service solutions are deployed in a matter of hours anywhere inthe world, providing customers an immediate and continuous view of theirsecurity and compliance postures. The QualysGuard® service is used today bymore than 3,500 organizations in 85 countries, including 35 of the FortuneGlobal 100 and performs more than 200 million IP audits per year. Qualys hasthe largest vulnerability management deployment in the world at a FortuneGlobal 50 company. Qualys has established strategic agreements with leadingmanaged service providers and consulting organizations including BT, Etisalat,Fujitsu, IBM, I(TS)2, LAC, SecureWorks, Symantec, TELUS and VeriSign. For moreinformation, please visit www.qualys.com.

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Qualys, the Qualys logo and QualysGuard are proprietary trademarks of Qualys, Inc. All other products or names may be trademarks of their respective companies.

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