Our Experience

Greenwood Security Services founded our consulting company after serving eleven years as a police officer and seventeen years in corporate security management for companies including Seeq Technology, Apple Computer, Compaq Computer, and Sun Microsystems.

Since 2003, Greenwood Security Services has provided cost effective solutions for protecting people, facilities, business assets, and intellectual property.  Our client industries include oil and gas; chemical manufacturing; electrical power and energy; software development; computing technology; pharmaceuticals; and office/property management. Our company is independent of any product or supplier, solely dedicated to our client’s best interest.

Our areas of practice include:

  • Risk and Security Vulnerability Assessments and Facility Security Plans
  • Homeland Security Compliance – plans, audits, exercises, training
  • Employee Security Awareness training
  • Office building and industrial facility security,
  • Workplace violence threat management, prevention and response,
  • Business information and trade secret protection,
  • Corporate security organization development, and executive coaching.

Regulatory expertise includes:

  • CFATS: Chemical Facility Anti-Terrorism Standards
  • C-TPAT: the Customs-Trade Partnership Against Terrorism
  • DOT Transportation HAZMAT Security Guidelines
  • MTSA: Maritime Transportation Security Act
  • TWIC: Transportation Worker Identification Credential
  • NERC: North American Electric Reliability Council
  • TSA Pipeline Security Standards
  • TSA Rail Security Standards


Donald E. Greenwood,
Founder, Chairman

Don has more than 40 years of consulting and corporate security management experience, including senior security management positions at Apple Computer, Compaq/HP, and Sun Microsystems. He has successfully served clients as a licensed security management consultant for more than fifteen years. Greenwood Security

Don serves on the American Society for Industrial Security’s Information Asset Protection Council, and was chairman in 2001. He published Business and Technology Protection, a well-regarded newsletter, from 1992 to 1996, and authored the chapter on Trade Secrets in the Encyclopedia of Security Management. Additionally, he co-founded the Technology Asset Protection Association (TAPA), now an international organization with hundreds of technology and logistics member companies.

He has conducted risk assessments and managed security projects in Argentina, Chile, Brazil, Colombia, Venezuela, Mexico, the United Kingdom, Russia, France, Singapore, Hong Kong, China, Holland, Australia, and Puerto Rico. He is a highly sought after consultant, trainer, and speaker.

Jonathan M. Greenwood                                                                                                                   

Executive Vice President, Chief Operating Officer, and Senior Consultant

Jon joined Greenwood Security Services in 2009 to work on the numerous Chemical Facility Anti-Terrorism (CFATS) projects the company submitted to the Department of Homeland Security (DHS). Jon supports many client projects including CFATS Security Plan development and submittal, Maritime Transportation Security Act (MTSA) security assessments, security plans, and annual requirements; DOT Hazmat Security Plans and Training, and TSA Pipeline security assessments and security plans.

He is our lead Facility Security Officer trainer and manages audits and exercises for many MTSA facilities.
Jon has a BA degree from the University of Texas.  He is an active member of the American Society for Industrial Security.

Karen S. Greenwood,
President and CFO

Karen brings years of experiences as office manager for a large medical practice, administrative support for an investment company, and managing engineering document control and the ECN process for the manufacturer of the space shuttle’s booster rockets and the rocket motors for many missile systems. Karen manages our company’s books and finances; billing and payables; and the interface with client’s accounting departments. She also manages document and specification control for large projects where this is essential for uniform revision and updating.