Security Design Associates
- Specializing in security and communication consulting. Includes services provided and background and experience. Located in Vermont.
- http://www.securitydesignassociates.com/

KDM Security Management
- Provides security consultancy and risk management services for white collar crime. Based in Frankfurt Germany.
- http://www.kdm-portal.com/

Safeguard Security Consultants
- Consulting services for private, business, and governmental security matters, including high risk institutions, crime detection and prevention, and terrorism. Based in the United Kingdom.
- http://www.safeguardsecurityconsultants.co.uk/

Security Management Services International, Inc.
- Provides security expert witness services, training programs, project design and management. Includes services provided, publications, and contacts.
- http://www.smsiinc.com/

Threat Analysis Group, LLC
- Provides businesses with objective and independent security advice and guidance. Includes free downloadable articles on security and relevant links to security resources.
- http://www.threatanalysis.com/

Total Security Services International, Inc
- Homeland security consultants. Provides training, anti-terrorism and violence prevention expertise, and security products.
- http://www.totalsecurity.us/

BvB Consult GmbH
- German consultant company specialising in nuclear, chemical and biological threat management.
- http://www.bvb-consult.de/

Lawrence Siegel
- Courthouse and public building security and facility planning.
- http://www.lscourt.com/

Howard Services
- Implements loss prevention programs, security system consulting, risk management and investigative services. Details of staff, services offered and a FAQ.
- http://www.expertsecurity.com/

Security Consulting Australia & Pacific Pty Ltd
- An independent security consultant based in Brisbane,Australia. Specialising in armed robbery prevention and security reviews.
- http://www.ecn.net.au/~hay/

John Gilgrist - Security Consultant
- Independent advisor providing services for personal, business, and real estate security. Includes description of services offered, experience and contact information. Indianapolis, Indiana.
- http://www.securityconsultant-jg.com

Safety Consulting Services
- Provides training, program development, program review, audits/inspections and general consulting services in the areas of safety, environment, security, and emergency management.
- http://www.safetyconsulting.com/

ASI - Advanced Security Integration
- Offering security and integration consulting. Includes company profile, information about services, research, and contact details. Based in Israel.
- http://www.asi-securitysolutions.com

Aanko Technologies, Inc
- Consulting and training firm specializes in safety and security, bioterrorism management, and organizational development. Company background, principal biographies, services, and partial client list.
- http://www.aanko.com/

Chernicoff Group
- Security consulting services for lawyers and security professionals: security adequacy, negligence, training, duty and related premises liability actions. Las Vegas, Nevada.
- http://www.cgroup.com/

Sako & Associates
- Consulting firm providing security systems design, safety, and audio-visual/communications services. Headquarters in Chicago, Illinois.
- http://www.rjagroup.com/sako/

Business Protection Specialists, Inc.
- Independent security consultants providing risk assessment, systems advice and security management services. Based in New York.
- http://www.securingpeople.com

Freelance Security
- Online clearinghouse for professional investigation and security consultant services with contract bidding features.
- http://www.freelancesecurity.com/

Practical Protection Associates Inc.
- Offers management consulting services in all areas of security, including computer and network security, asset recovery, and protection services.
- http://www.practicalprotection.com/

Secure Source, Inc.
- Dallas, Texas investigative, executive protection, training and security firm, offering services on a worldwide basis.
- http://www.securesource.com/

Simmons Electronic Consultancy Pty Ltd
- Australian consultancy company specialising in design and documentation of CCTV, mobile duress and perimeter fencing security, for correctional institutions and airports.
- http://www.simmons.com.au

Security Enterprise Consultants
- High-value asset security and high-risk operations management since 1988
- http://sec-global.com

Jaz International Security Consultants
- An international security consulting company that offers CPTED design, threat and risk assessments and security management services around the globe.
- http://www.jazconsultinglimited.com/

AsecureAmerica
- Security consulting firm experienced in security management, security systems planning and design, information protection, law enforcement, crime and loss prevention, workplace violence prevention, and antiterrorism methods.
- http://www.asecureamerica.com

A.P. Securitas
- Professionally managed security services company. Located in India.
- http://www.apsecuritas.com

Inxtec Security International
- Toronto based, international provider of corporate security consulting, training and services.
- http://www.inxtec-security.com/

Security Support Services
- One of the South's largest security consultant agencies.
- http://www.securitysupportservice.com/

Loss Prevention Concepts, Ltd.
- Security consulting services, investigation services, and expert testimony for premises liability and security related litigation. Located in Farmington, Michigan. 
- http://www.lpconline.com/

Seraph Inc
- Offers companies, law enforcement agencies, and individuals programs to solve security problems. Located in Berwyn, Pennsylvania.
- http://www.seraph.net/