GSI

What GSI does

GSI (Group Services LLC), founded in 1990 and headquartered in Fort Worth, Texas, is a privately held security consultancy delivering integrated physical, technical, and information security services to a select base of enterprise clients across the United States. The company's service portfolio spans six lines: Physical Security (armed officers and executive protection), Technical Security Systems (camera systems, alarm systems, access control, 24/7 monitoring), Employee Training (First Aid/AED, First Responder, Firearms, State Certifications, Defensive Tactics through a TDPS-licensed training school), Investigations (pre-employment screening, M&A due diligence, internal investigations), Security Management (critical infrastructure assessments, emergency response, travel security), and Information Technology Services (desktop support, server administration, vulnerability assessment, penetration testing, network management).

GSI's technology stack is conventional rather than differentiated: it relies on commercial-grade electronic security infrastructure (cameras, alarms, access control panels) monitored from a 24/7 operations center, alongside standard enterprise IT and cybersecurity tooling. The company's differentiator is operational delivery rather than proprietary technology—credentialed personnel, regulatory licensure (Texas DPS contractor and training school licenses; California PPO/TFF/TFB credentials), and a tightly scoped client portfolio that allows bespoke service. GSI also operates a West Coast office under the "Group Services West" brand in Redwood City, California.

Commercially, GSI runs a professional services revenue model with custom, undisclosed pricing for select clients, relying on direct enterprise sales rather than a partner or channel network. Recent strategic activity includes a joint venture with Parsons Corporation that won a $25 million U.S. Coast Guard program management contract in 2026, signaling entry into the federal/defense vertical, and a minority investment in AI-marketing startup Spike AI in 2025. No public funding, M&A, or product launch activity is disclosed.

Name

GSI

Legal name

Group Services LLC

Website

https://gsisecurity.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

101–250 employees

Short description

GSI (Group Services LLC) is a Fort Worth-based security consultancy, founded in 1990, providing integrated physical, technical, and IT security services, investigations, and training to select enterprise clients across the United States from offices in Texas and California.

Ownership category

akta.pro rank

Product category

Corporate Security Services

NAICS

Security Guards and Patrol Services (561612), Security Systems Services (except Locksmiths) (561621), Investigation and Personal Background Check Services (561611), Investigation, Guard, and Armored Car Services (56161)

SIC

Services-Detective, Guard & Armored Car Services (7381), Services-Facilities Support Management Services (8744)

akta.pro primary industry

Executive Protection & Close Protection (BPABAMAD)

akta.pro secondary industries

Security Systems Monitoring & Dispatch (SOC/Remote Guarding) (IMAIAEAF), Security Audits & Compliance (ISO 27001, SOC 2, PCI DSS, HIPAA, SOX) (BPAKADAC)

Keywords

• Physical security services
• Corporate investigations
• Technical security systems
• Security training programs
• Executive protection services

Headquarters

HQ city

Fort Worth

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Security Services: Professional security services including physical security (armed officers, executive protection), technical security (camera systems, alarm systems, access control, 24/7 monitoring), investigations (pre-employment screening, M&A due diligence, internal investigations), security management, and IT services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

GSI provides proprietary, integrated security services to select enterprise clients across the United States. Offerings span physical security (armed/unarmed officers, executive protection, off-duty police), technical security (cameras, alarms, access control, 24/7 monitoring), employee training, corporate investigations, security management, and IT security services (vulnerability assessments, penetration testing, computer forensics).

Product overview

Group Services Inc. (GSI) provides a comprehensive portfolio of security and IT services through multiple integrated service lines. The company operates as a single unified service provider combining Physical Security Services (armed officers, executive protection), Technical Security Systems (cameras, alarms, access control, 24/7 monitoring), Employee Training (First Aid, firearms, defensive tactics), Investigations (pre-employment screening, M&A due diligence, internal investigations), Security Management (critical infrastructure assessments, emergency response, travel security), and Information Technology Services (desktop support, server administration, vulnerability assessment, penetration testing, network management). These services are designed to work together to ensure protection of assets, individuals, and information for clients across the nation.

Differentiator

Problem solved

Functional benefit

Products and services

• Physical Security Services Provision of armed and unarmed security officers, executive protection, and off-duty police officers for enterprise client sites. Designed for organizations requiring trained on-site security personnel and executive protection coverage.
• Technical Security Systems Design, deployment, and integration of camera systems, alarm systems, and access control solutions, supported by 24/7 monitoring operations. Intended for enterprise clients seeking electronic security infrastructure.
• Employee Training Services Security-related training programs for client employees, covering situational awareness and security procedures. Targeted at enterprise workforces needing security awareness and preparedness.
• Investigations Services Corporate and specialized investigations provided to enterprise clients. Designed for organizations requiring discreet fact-finding, internal inquiries, and specialized investigative support.
• Security Management Services Outsourced security management for enterprise clients, providing program oversight and coordination across physical, technical, and investigative functions.
• Information Technology Services IT security services including vulnerability assessments, penetration testing, and computer forensics for enterprise clients. Targeted at organizations requiring cyber security testing and digital forensic support.

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature4 records

Partnerships

One partnership is on record.

• Parsons CorporationcoreStrategic or Co-development Partner · 15 April 2026Parsons Corporation's joint venture with GSI Americas Inc. was awarded a $25 million contract by the United States Coast Guard for program management services under the USCG's Force Design 2028 Execution Plan. The contract includes a one-year base period plus four one-year option periods, supporting the Coast Guard's $24.5 billion capital investment program for transformational upgrades across Coast Guard assets, technology, and shore infrastructure.

Scale indicators1 record

Recent moves2 records

Expansion highlights3 records

Broad incumbents

• Securitas AB: Largest global security services firm offering guarding, electronic security, and risk solutions. Directly comparable to GSI across physical guarding, alarm/access monitoring, and integrated security services, but at vastly greater scale and geographic reach.
• Allied Universal: Major North American security services provider with manned guarding, security systems, and technology-enabled services. Closely comparable to GSI in service mix (armed officers, monitoring, investigations support) but with national scale GSI lacks.
• GardaWorld (including G4S assets): Global security and cash services company (now incorporating G4S) providing guarding, integrated security, and risk consulting. Comparable to GSI's physical security, monitoring, and investigations offerings, with substantially larger federal/international exposure.
• ADT: Largest U.S. residential and commercial electronic security provider (cameras, alarms, access control, monitoring). Comparable to GSI's technical security and 24/7 monitoring services, but skews more toward recurring commercial monitoring revenue.

Direct peers

• Constellis: U.S. security and risk management firm providing protective services, intelligence, and mission support to government and commercial clients. Highly comparable to GSI's armed officers, executive protection, and security management lines, with a stronger federal/government tilt.
• Walden Security: Mid-sized U.S. security services firm offering uniformed officers, security systems, and specialized services. Closely comparable to GSI in service mix and as a regional/select-client operator scaling into integrated solutions.
• St. Moritz Security Services: U.S. security services firm providing uniformed officers, investigations, and security consulting to a select enterprise client base. Comparable to GSI in client model (focused, relationship-driven) and core guarding/investigations offerings.
• SOS Security: Mid-sized U.S. security provider offering uniformed guarding, executive protection, and security consulting. Directly comparable to GSI's armed officers, EP, and security management lines, with similar scale and federal experience.
• Prosegur: Global private security firm offering manned guarding, integrated security systems, and cash logistics. Comparable to GSI in physical security and monitoring/technical security lines, with a much larger international footprint.

Emerging players

• Concentric Security: Specialty security firm focused on federal facility protection, SCIF accreditation, and government security services. Comparable to GSI's government-facing work (USCG/Parsons JV) and security management offerings, with deeper federal clearances.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company-beta/10673751

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GSI