Guidance Software Presenting Wednesday, May 28, 2008 at Cowen and Company 20th Annual 20/20 Technology Media Telecomm Conference

Business Wire, May 27, 2008

PASADENA, Calif. -- Guidance Software, Inc. (NASDAQ:GUID), The World Leader in Digital Investigations(TM), today announced its participation in the following event:

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Cowen and Company
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20th Annual 20/20 TMT Conference
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Wednesday, May 28, 2008
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1:50 pm EDT
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The New York Palace Hotel
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New York, New York
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Company Participants:  <  <  <  <



Frank Sansone, Chief Financial Officer
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Bill Powell, Director of Investor Relations

Interested parties should contact Cowen and Company for further information about this event.

The company will have availability outside of this conference to meet interested parties in the New York metro area on Thursday, May 29. To indicate your interest in meeting company management, please contact Guidance Software Investor Relations.

About Guidance Software:

Guidance Software is recognized worldwide as the industry leader in digital investigative solutions.

Its EnCase(R) 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 eDiscovery 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 27,000 licensed users of the EnCase(R) technology worldwide, and thousands attend Guidance Software's renowned training programs annually. Validated by numerous courts, corporate legal departments, government agencies and law enforcement organizations worldwide, EnCase has been honored with industry awards and recognition from eWEEK, SC Magazine, Network Computing, and the Socha-Gelbmann survey.

For more information about Guidance Software, visit www.guidancesoftware.com.

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