Attached files

file filename
10-K - FORM 10-K - Guidance Software, Inc.d10k.htm
EX-31.2 - CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 - Guidance Software, Inc.dex312.htm
EX-32.1 - CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 906 - Guidance Software, Inc.dex321.htm
EX-31.1 - CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 - Guidance Software, Inc.dex311.htm
EX-10.3 - AMENDED AND RESTATED EXECUTIVE RETENTION AND SEVERANCE PLAN - Guidance Software, Inc.dex103.htm
EX-10.24 - EMPLOYMENT AGREEMENT - LARRY A. GILL - Guidance Software, Inc.dex1024.htm
EX-10.21 - FORM OF FIRST AMENDED RESTATED EQUITY INCENTIVE PLAN - Guidance Software, Inc.dex1021.htm
EX-10.22 - AMENDMENT TO OFFER LETTER - BARRY J. PLAGA - Guidance Software, Inc.dex1022.htm
EX-10.23 - EMPLOYMENT AGREEMENT - MARK E. HARRINGTON - Guidance Software, Inc.dex1023.htm
EX-32.2 - CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 906 - Guidance Software, Inc.dex322.htm

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-140007 on Form S-8 of our report dated February 26, 2010, relating to the consolidated financial statements and financial statement schedule of Guidance Software, Inc. and subsidiaries (which report expresses an unqualified opinion), and the effectiveness of Guidance Software, Inc. and subsidiaries’ internal control over financial reporting, appearing in the Annual Report on Form 10-K of Guidance Software, Inc. and subsidiaries for the year ended December 31, 2009.

/s/ Deloitte & Touche LLP

Los Angeles, California

February 26, 2010