MANDIANT Closes Strategic Investment Round With One Equity Partners, Kleiner Perkins Caufield Byers

PRESS RELEASE

Alexandria, Va., June 27, 2011 - MANDIANT, the leader in advanced threat detection and response solutions and services, today announced that One Equity Partners (OEP), the private investment arm of JPMorgan Chase & Co., and Kleiner Perkins Caufield & Byers (KPCB) have completed a strategic investment in the company. MANDIANT also announced the addition of Ted Schlein (KPCB) and A. Jody Gessow (OEP) to its Board of Directors.

"We look forward to scaling and meeting the significant demand for MANDIANT products and services with the resources of KPCB and OEP," said MANDIANT CEO Kevin Mandia. "Ted and Jody bring decades of proven security and executive experience and we welcome them to the board."

"Over recent months the importance of knowing whether your network has been breached has become alarmingly clear. MANDIANT is the global leader in helping major corporate and government entities answer this question and execute an effective response. With the experience and financial resources of MANDIANT's new investors, we are confident MANDIANT will prosper in the years ahead. We are delighted to become their partner in fulfilling their long-term goals," said OEP's Jody Gessow.

"The number and scope of advanced and targeted attacks continues to increase, and preventive measures alone are no longer sufficient to protect organizations from intrusions", said KPCB's Ted Schlein. "MANDIANT is uniquely positioned to be the early warning system for the next wave of advanced attacks. I am excited to be part of the team that is doing so much to ensure organizations have an aggressive and successful security posture."

On May 16, the company launched MANDIANT Intelligent Response' (MIR) v2.0 , featuring the second generation of powerful host-based incident response for enterprise organizations. Trusted by incident responders at the world's largest banks, defense contractors, energy companies and manufacturers, MIR 2.0 enables enterprises to respond faster, limit losses and speed the return to normal business operations.

About MANDIANT

MANDIANT is the leading provider of advanced threat detection and response solutions and services. Headquartered in Alexandria, Va., with offices in New York, Los Angeles and San Francisco, MANDIANT provides products, professional services and education to Fortune 500 companies, financial institutions, government agencies, domestic and foreign police departments and leading U.S. law firms. MANDIANT comprises one of the industry's largest incident response and forensics forces. The authors of nine books, and quoted frequently by leading media organizations, MANDIANT security consultants and engineers hold top government security clearances and certifications and advanced degrees from some of the most prestigious computer science universities. To learn more about MANDIANT visit www.mandiant.com, read the company blog, M-Unition, follow on Twitter @MANDIANT or on Facebook.

About One Equity Partners

One Equity Partners is the private investment arm of JPMorgan Chase & Co. and manages over $10.5 billion in commitments and investments solely for the bank. OEP enters into long-term partnerships with companies to create sustainable value through long-term growth driven both organically and inorganically. Founded in 2001, OEP has 39 investment professionals in New York, Chicago, Silicon Valley, Frankfurt, Hong Kong and elsewhere around the globe. Visit www.oneequity.com for more information.

About Kleiner Perkins Caufield & Byers

Since its founding in 1972, Kleiner Perkins Caufield & Byers has backed entrepreneurs in over 600 ventures, including Amazon, Amyris, Bloom Energy, Electronic Arts, Genentech, Google, Intuit, Netscape, Sun, Symantec, and Zynga. KPCB portfolio companies employ more than 250,000 people. More than 150 of the firm's portfolio companies have gone public. Many other ventures have achieved success through mergers and acquisitions. For more information visit www.kpcb.com.