Top-Ranked Analyst Firm Recognizes ArcSight as a Leader in its Market

ArcSight Moves up the Charts and Captures Most Market Share in Security Information and Event Management  

CUPERTINO, Calif. - August 21, 2007 - ArcSight, Inc., a leader in Enterprise Security and Compliance Management solutions, today announced that it has the leading market share of the Security Information and Event Management (SIEM) software market, according to historical market-share data published by IDC, an IT market research and advisory firm.

"Organizations are looking for security and compliance solutions that not only mitigate risk and protect critical assets, but also scale with a company’s growth," said Hugh Njemanze, Chief Technology Officer and Executive Vice President of Research and Development, ArcSight.  "We believe from our movement that we’re leading the SIEM market not only with our architecture but also in our understanding of the industry and our customer’s growth and needs."

The forecast report indicated that SIEM is the largest segment of the Security and Vulnerability Management (SVM) software market and is expected to grow from $284 million in 2005 to $1,135 million in 2011, a compound annual growth rate (CAGR) of 25.2 percent (Source: IDC, Worldwide Security and Vulnerability Management Software 2007–2011 Forecast and Analysis: Governing Security and Risk Management).

"The security industry has an opportunity to be innovative as the market and threat landscape evolve," said Rose Ryan, Research Analyst, Security Products & Services, IDC. "ArcSight's efforts to date have put it in a strong position to lead this market forward."

For more information on the "IDC Worldwide Security and Vulnerability Management Software 2007–2011 Forecast and Analysis: Governing Security and Risk Management," please visit www.idc.com.

About ArcSight
ArcSight is a leading provider of security and compliance solutions that intelligently identify and mitigate business risk and deliver a centralized view of enterprise-wide events across heterogeneous infrastructures. This real time and historic view into external attacks, insider threats and regulatory compliance provides enterprises, MSSPs, and government agencies with the intelligence and response capabilities required to effectively protect and manage their networks and their businesses.

ArcSight and the ArcSight logo are trademarks of ArcSight, Inc.

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Kristin Kiltz
Engage PR
(510) 748-8200 x.204
Kristin@engagepr.com