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Headquarters Office 
 
Guidance Software, Inc.*
215 North Marengo Avenue, Suite 250
Pasadena, CA 91101
Directions 
Main: (626) 229-9191 (866) 973-6577
Fax: (626) 229-9199
Email us at one of our departments:

 

 
pictuer_Headquarters Office 
UNITED STATES OFFICES
*training facilities
                                                       INTERNATIONAL OFFICES
 
New York
  • 551 5th Avenue Suite 400
  • New York, NY 10176
  • Main: (212) 277-3700
  • Fax: (212) 277-3707
  • Directions 
 
San Francisco
  • 50 California Street, Suite 200
  • San Francisco, CA 94111
  • Main: (510) 652-5011
  • Fax: (510) 652-5018
  • Directions 
 
Brazil
 
  • Av. Paulista, 2300
    Andar Pilotis - Cerqueira Cesar
    São Paulo – SP, 01310-300, Brazil
    Main: +55 11 6847-4665

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United Kingdom*
  • Thames Central, 5th Floor
  • Hatfield Road
  • Slough, Berkshire SL1 1QE
  • Main: +44 (0) 1753552252
  • Fax: +44 (0) 1753552232
  • Directions
     
 
Washington D.C.*
  • 21000 Atlantic Blvd Suite 750
  • Dulles, VA 20166
  • Main: (703) 433-5400
  • Fax: (703) 433-5368
  • Directions  
 
Houston*
  • 1300 Post Oak Blvd Suite 550
  • Houston, TX 77056
  • Main: (832) 200-9068
  • Fax: (832) 200-9069
  • Directions 
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Chicago*
  • 9450 West Bryn Mawr Ave, Suite 200
  • Rosemont, IL 60018
  • Main: (847) 994-7324
  • Fax: (847) 994-7325
  • Directions 
 
Singapore
  • 80 Raffles Place
  • Unit 36-02, UOB Plaza 1,
  • Singapore 048624
  • Main: +65 6248 4527
  • Fax: +65 6248 4531
 
 
 
Customer Service 
  • HOURS 
 
 
Media & Industry Anaylist Contacts 
  • INVESTOR RELATIONS 
 
  • MEDIA AND ANALYST RELATIONS 
 
Technical Support 
  • PHONE SUPPORT 
  • Support is available 24 hours from Sunday, 7:00 PM to Friday 6:00 PM
  • Pacific Time (Monday, 3:00 AM to Saturday, 1:00 PM GMT).
  • Toll-Free Numbers: 
  • Germany:           0-800-181-4625
  • Australia:           1-800-750-639
  • New Zealand:    0-800-45-0523
 
  • China: 10-800-130-0976
  • Hong Kong: 800-96-4635
  • Japan: 00-531-13-0890
 
  • US Contact Info:  
 
  • UK Contact Info:  
 
  • 215 North Marengo Avenue
  • Suite 250
  • Pasadena, CA 91101
  • Phone: 1-626-229-9191, Option 4
  • Fax: 626-229-9199
 
  • Thames Central, 5th Floor
  • Hatfield Road
  • Slough, Berkshire UK SL1 1QE
  • Phone: +44 (0) 1753552252, Option 4
  • Fax: +44 (0) 1753552232