Guidance Software, Inc. (NASDAQ:GUID), the World Leader in Digital Investigations™, reported today that EnCase® Enterprise, the industry-standard platform for network-wide digital investigations, added 358 new customers in 2012, an increase of 26 percent from 285 in 2011. The company also announced that it added 129 new customers in the fourth quarter of 2012, which represents a 33 percent increase over the fourth quarter of 2011.

“EnCase Enterprise is the most powerful solution for discreet, remote digital investigations and remains best in class because of our continuous investment in development, making it highly sought after by the world’s largest organizations,” said Victor Limongelli, president and chief executive officer of Guidance Software. “Moreover, our customers gain the significant benefit of being able to rapidly expand their capabilities on top of the EnCase Enterprise platform with our EnCase® eDiscovery and EnCase® Cybersecurity products soon after implementation.”

A partial list of new EnCase customers in 2012 includes the following organizations:

• Allergan
• Apple
• Avon Products
• Boston Scientific
• CBS
• Chesapeake Energy
• Coach
• Expedia
• Federal Reserve – Board of Governors
• Georgia Institute of Technology
• GM Financial
• Henry Schein
• Intelsat
• Live Nation
• National Grid plc
• New York Life Insurance
• New York Times
• Nokia
• NRG Energy
• Orbitz
• PayPal
• PetSmart
• Polo Ralph Lauren
• Praxair
• Rutgers University
• Samsung
• Shaw Group
• Seagate Technology
• Telefónica México
• Thrivent Financial
• Universal Music Group
• University of Wisconsin-Madison
• Vale do Rio Doce
• Valspar
• Warner Music Group
• Whole Foods

About EnCase Enterprise

EnCase Enterprise is the most powerful and easiest-to-use digital investigations platform for security, internal investigations, and discovery in the enterprise. Used by more than 65 of the Fortune 100 and numerous government agencies worldwide, EnCase Enterprise enables remote search, collection, preservation, and analysis of data from servers and workstations anywhere on the corporate network without disrupting operations.

About Guidance Software, Inc.

Guidance Software is recognized worldwide as the industry leader in digital investigative solutions. Its EnCase® platform, with more than 40,000 licenses distributed worldwide, provides the foundation for government, corporate and law enforcement organizations to conduct thorough, network-enabled, and court-validated computer investigations of any kind, such as responding to e-discovery requests, conducting internal investigations, responding to regulatory inquiries, or performing data and compliance auditing - all while maintaining the integrity of the data. The EnCase Enterprise platform is used by numerous federal, civilian and defense agencies, more than 65 of the Fortune 100, and thousands attend Guidance Software's renowned training programs annually. For more information about Guidance Software, visit www.guidancesoftware.com.

EnCase®, EnScript®, FastBloc®, EnCE®, EnCEP®, CaseCentral®, CaseCentral eDiscovery Cloud®, Guidance Software™ and Tableau™ are registered trademarks or trademarks owned by Guidance Software in the United States and other jurisdictions and may not be used without prior written permission. All other trademarks and copyrights referenced in this press release are the property of their respective owners.

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