- Alarm Monitoring Service of Atlanta
 - Atlanta - Provides security systems for home and business. - American Guardian Security Systems, Inc.
- Norcross - Residential and commercial security alarm company specialising in burglar, fire, and medical emergency alarm systems.
- Criterion Technology, Inc.
- Thomaston - Manufacturer of thermoformed dome enclosures for the closed circuit television industry.
- Home Control Inc.
- Alpharetta - Installer of security, automation and audio and video systems for the home.
- MPS Security, Inc.
- Hampton - Specialises in armed and unarmed guard, security, and escort services.
- Phoenix Loss Prevention, Inc.
- Fayetteville - Providing undercover investigations, interviews, background verification, workers compensation investigation, loss prevention surveys, and safety and compliance audits.
- Sentry Surveillance, Inc
- Kennesaw - Security camera surveillance systems.
- Stancom, Inc.
- Atlanta
- Tech Systems Inc.
- Atlanta - Access control and closed-circuit television systems.
- US Security Associates, Inc.
- Atlanta
- Videolarm, Inc.
- Decatur - Specialises in the creation of decorative and functional CCTV accessories.
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