Guidance Software’s CEIC Wins Forensic 4cast Award for Outstanding Contribution to Digital Forensics

Guidance Software, Inc. (NASDAQ: GUID), today announced that its Computer and Enterprise Investigations Conference (CEIC) has garnered a Forensic 4cast Award for Outstanding Contribution to Digital Forensics at the SANS Summit in Austin, Texas last week. Additionally, Guidance Software’s market-leading digital investigation tools took the top spots for Best Forensic Software for EnCase® Forensic and Best Forensic Hardware for the Tableau TD1.

Now in its third year, the Forensic 4cast Awards provide the digital forensic industry a platform to nominate and vote for the best people, companies, and products throughout the industry. Hosted by Lee Whitfield, Forensic 4cast founder, nominations opened in February and voting took place May 4 through June 5. A complete list of winners can be found at http://www.forensic4cast.com/forensic-4cast-awards/.

“The fact that Guidance Software won three awards is unprecedented; no single organization or individual has achieved that in previous years,” said Lee Whitfield, Forensic 4cast founder and host of the Forensic 4cast Awards. “Guidance has made some great progress in the last year. [EnCase® Forensic] Version 7 looks great and has some serious potential. That may be why the community came out in their numbers to vote for Guidance.”

About CEIC

Guidance Software just wrapped up the 11^th annual CEIC, that brought together the world’s most impressive experts in the fields of digital investigations, e-discovery and cybersecurity. Held last month in Orlando, the conference was attended by more than 1300 attendees from corporations, government agencies, law enforcement, technology and service providers, industry luminaries and more. Next year's CEIC 2012 is expected to be even bigger, and will be held at the Red Rock Resort in Summerlin, Nevada, May 21 to 24, 2012.

“This is an exciting time for the field of digital forensics, and we believe that Guidance Software is taking innovative steps to bring the industry to the next level, particularly with the forthcoming EnCase Forensic V7 that will ship at the end of June,” said Jim Borecki, vice president of the Forensics Business Unit at Guidance Software. “Garnering three Forensic 4cast awards validates not only CEIC as the most successful, well attended and best digital investigation conference in the world, but also our entire suite of forensic investigation tools. Our goal is to make digital investigations easier, faster and better – setting a baseline for the industry to follow.”

About Guidance Software, Inc.

Guidance Software is recognized worldwide as the industry leader in digital investigative solutions. Its EnCase® platform 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. There are more than 30,000 licensed users of the EnCase technology worldwide, the EnCase® Enterprise platform is used by more than half of the Fortune 100, and thousands attend Guidance Software's renowned training programs annually. For more information about Guidance Software, visit www.guidancesoftware.com/.

Follow Guidance Software on Twitter at www.twitter.com/encase and on Facebook at www.facebook.com/guidancesoftware.

EnCase®, EnCE®, EnCEP®, EnScript®, FastBloc®, 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 marks and brands may be claimed as the property of their respective owners.

Forward Looking Statements

This news release contains forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investors are cautioned that forward-looking statements in this release involve risks and uncertainties that could cause actual results to differ materially from current expectations. There can be no assurance that demand for the Guidance Software's products will continue at current or greater levels, or that the Company will continue to grow revenues, or be profitable. There are also risks that the Guidance Software's pursuit of providing network security and eDiscovery technology might not be successful, or that if successful, it will not materially enhance the Guidance Software's financial performance; that the Company could fail to retain key employees; that changes in customer requirements and other general economic and political uncertainties could impact the Guidance Software's relationship with its customers; and that delays in product development, competitive pressures or technical difficulties could impact timely delivery of next-generation products; and other risks and uncertainties that are described from time to time in Guidance Software's periodic reports and registration statements filed with the Securities and Exchange Commission. The Company specifically disclaims any responsibility for updating these forward-looking statements.

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