Protos Security
Protos Security is a tech-enabled managed security services provider and the 4th largest in the U.S., delivering guarding, off-duty law enforcement, remote video monitoring, and specialized services to 500+ enterprise clients across all 50 states via a proprietary software platform.
- Company typePrivate
- Founded2006
- HeadquartersNorwalk, United States
- Headcount251–500
- GTM typeB2B
- OfferingServices
What Protos Security does
Protos Security is a technology-enabled managed security services provider founded in 2006 and headquartered in Norwalk, Connecticut. The company operates as an aggregator and software layer over a national network of 2,800+ local owner/operator security vendor branches, 60,000+ off-duty law enforcement personnel, and 1,400+ agency partnerships, delivering services across all 50 U.S. states. Protos is positioned as the 4th largest security services provider in the U.S., serving more than 500 enterprise clients across 11+ verticals including banking, healthcare, retail, logistics, manufacturing, chemical/petrochemical, high-tech, and hospitality. The customer base includes Fortune 500/100 logos such as 13 of the top 16 U.S. retail banks, a Top-3 U.S. bank, Fortune 100 logistics and pharmacy chains, and a Fortune 500 department store retailer.
The company monetizes through managed guarding services, off-duty law enforcement staffing, cloud-based remote video guarding, and specialized services (executive protection, investigations, high-value transport) under four primary revenue streams, with a mix of monthly subscription, annual enterprise contracts, and per-hour/per-post unit pricing. Revenue mechanics are anchored by data-validated billing (clients pay only for actual time worked) and a 24/7 dispatch and operations center. The core technology is the proprietary Dynamic Security Management Platform, comprising a Client Portal, Vendor Portal, Protos Connect and Protos Select mobile apps (25K+ combined downloads), cloud-based video surveillance, and an AI-powered operational agent launched at ISC West 2026. The platform supports API integrations with CAP Index, Oracle procurement systems, and ThinkLP loss-prevention software.
Protos has executed 12 acquisitions under Southfield Capital ownership, expanding into remote guarding technology (ControlByNet), East Coast guarding capacity (MG Security), off-duty police officer services (Off Duty Services, Blue Star Security, Summit Off Duty Services), and intelligence-led protective services (AT-RISK International, 2026). The company divested Mulligan Security to Allied Universal in 2025, indicating selective portfolio rationalization. CEO Mark Hjelle leads a full executive bench (CFO, COO, CRO, multiple SVPs across operations, sales, marketing, software engineering, finance, M&A, HR, IT, legal) supporting both organic platform development and continued inorganic growth.
Protos Security firmographics
Firmographics- Name
- Protos Security
- Legal name
- Protos Security
- Website
- https://protossecurity.com
- Company type
- Private
- Founded year
- 2006
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Protos Security is a tech-enabled managed security services provider and the 4th largest in the U.S., delivering guarding, off-duty law enforcement, remote video monitoring, and specialized services to 500+ enterprise clients across all 50 states via a proprietary software platform.
- Ownership category
- akta.pro rank
Protos Security industry classification
Industry- Product category
- Managed Security Services
- NAICS
- Security Guards and Patrol Services (561612), Investigation, Guard, and Armored Car Services (56161), Security Systems Services (except Locksmiths) (561621), Computer Systems Design and Related Services (5415)
- SIC
- Services-Detective, Guard & Armored Car Services (7381), Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- Temporary / Rapid Deployment Guarding (Surge & Short-Term Coverage) (BPAKAAAN)
- akta.pro secondary industry
- Executive Protection & Close Protection (BPABAMAD)
Keywords
Where Protos Security is headquartered
LocationHeadquarters
- HQ city
- Norwalk
- HQ country
- United States
- HQ region
- North America
Offices17 records
Markets served
Protos Security business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Managed Security Services - Guarding: Protos manages and coordinates relationships with thousands of local owner/operator security vendors to provide scalable protection. Services include unarmed guards, armed guards, concierge officers, and marked patrol vehicles.
- Off-Duty Law Enforcement Services: Access to nation's largest off-duty law enforcement network with 60,000+ personnel and 1,400+ agency partnerships. Includes risk transference through comprehensive insurance coverage and integrated scheduling/payroll.
- Remote Video Guarding: Cloud-based remote surveillance services compatible with existing camera infrastructure. Includes 24/7 monitoring, incident notifications, and video analytics with customizable reporting.
- Specialized Security Services: Customized end-to-end solutions including executive protection, investigations, high-value transport, production studio security, and site assessments through Blue Star Specialized Services division.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Enterprise National Accounts |
| Unit Pricing | Monthly | Multi-location Programs |
| Subscription | Monthly | Remote Video Monitoring |
Go-to-market motion2 records
Distribution channels5 records
Marketing channels7 records
Protos Security product offering
Product offeringCore offering
Protos Security is a tech-enabled managed security services provider that delivers physical guarding, off-duty law enforcement, specialized (executive protection, investigations, high-value transport), and remote video guarding services to enterprise clients across all 50 U.S. states. The company operates a proprietary Dynamic Security Management Platform that orchestrates a nationwide network of 2,800+ vetted local security vendors and 60,000+ off-duty law enforcement personnel, providing clients with a single point of contact, real-time visibility, and data-validated billing.
Product overview
Protos Security is a technology-enabled managed security services provider offering a unified platform combining guarding services, off-duty law enforcement, specialized services, and remote video guarding. The portfolio includes the core Protos Security Platform supported by proprietary tools (Protos Client Portal, Protos Vendor Portal, Protos Connect, Protos Select, and the AI-Driven Security Operations Platform). The company operates sub-brands including Blue Star Security (specialized/law enforcement-led services), Summit Off-Duty Services, Squad Security, and Associated Protective Service, with acquired technology brand Securitime providing real-time visibility and control capabilities. Services span banking, chemical/petrochemical, commercial real estate, distribution/logistics, education, healthcare, high tech, hotels/hospitality, manufacturing/industrial, multifamily properties, and retail industries.
Differentiator
Problem solved
Functional benefit
Brands
- Securitime: Real-time visibility and control platform for managing modern security programs with centralized data across vendors, locations and services.
- Blue Star Security
- Blue Star Specialized Services
Products and services
- Guarding Services
- Off-Duty Law Enforcement Services
- Specialized Security Services
- Remote Video Guarding Services
Quantifiable outcome
- 98% customer retention rate
- +4 more outcomes
Companies that use Protos Security
Customer profileNamed customers16 records
Segments11 records
Ideal customer profiles1 record
Protos Security technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
AI capability8 records
Feature6 records
Protos Security partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered minor and core.
- Blue Star Security (Original)minorChicago-based company employing over 850 law enforcement officers. Enhanced Protos service offerings in providing off-duty police officers for Fortune 500 clients. Third acquisition for Protos in 2022.
- MG Security ServicesminorProvider of security guard services and risk mitigation acquired September 2022. Expanded Protos presence on East Coast with focus on healthcare and other end markets.
- Off Duty ServicesminorProvider of off-duty police officers acquired September 2021. Deal expanded Protos service offerings and accelerated growth as fourth largest security services provider in North America.
- AT-RISK InternationalcoreWashington D.C.-based provider of executive protection, intelligence, and risk consulting services. 12th acquisition since partnering with Southfield Capital. Expands capabilities into specialized risk consulting, threat assessments, and protective services for enterprise and high-net-worth clients.
- Summit Off Duty ServicescorePolice-officer security provider based in Irving, TX. 10th acquisition for Protos. Manages security services nationwide using network of police officers. Expanded Protos to become 4th largest security provider in U.S.
- Blue Star SecuritycoreSpecialized services division delivering law-enforcement-led expertise through Blue Star within Protos offering. State-certified law enforcement professionals with backgrounds in criminal intelligence and police detective work.
- SecuritimecoreSubsidiary providing real-time visibility and control for modern security programs. Centralizes data across vendors, locations, and services with live reporting, standardized workflows, and multi-vendor coordination.
- 2,800+ Local Security VendorscoreNationwide network of local owner/operator security vendors vetted, trained, and managed by Protos. Delivers guarding and off-duty services across all 50 states with 4M+ annual timekeeping events.
- 1,400+ Law Enforcement AgenciescoreAgency partnerships providing access to 60,000+ off-duty law enforcement officers for security assignments nationwide.
Scale indicators17 records
Recent moves7 records
Expansion highlights6 records
Protos Security competitors and assessment
Company assessmentBroad incumbents
- Allied Universal: The largest security services provider in North America, offering manned guarding, security technology, and risk consulting to enterprise and government clients — directly comparable as a national guarding competitor and recent acquirer of Protos' divested Mulligan Security unit.
- Securitas: Global security services leader with deep U.S. guarding footprint and growing technology-enabled services portfolio; competes head-to-head with Protos in multi-site enterprise guarding contracts and remote video monitoring.
- GardaWorld: Canadian-based global security and cash services provider with significant U.S. guarding operations; competes in similar enterprise security verticals and pursues a comparable M&A-driven growth strategy.
- Prosegur: Global provider of manned guarding, cash logistics, and security technology with an established North American subsidiary (formerly Covenant, G4S private security units acquired); competes directly in multi-vertical guarding.
- Brink's: Global leader in cash-in-transit and security solutions with North American guarding and digital retail solutions; comparable as an end-to-end physical security and risk services provider.
Direct peers
- Sunstates Security: U.S.-focused security guarding firm with national coverage targeting banking, commercial real estate, and technology clients — closely comparable in vertical mix and contract-based managed guarding model.
- United Security: Provider of security personnel and security technology services to enterprise clients in banking, healthcare, and commercial properties; comparable in services mix and target customer profile to Protos.
Emerging players
- National Security & Protection Services: A smaller-scale security guarding and off-duty law enforcement provider focusing on select U.S. regional markets; partially overlaps with Protos in law-enforcement-led guarding for banks and healthcare.
- ECAMSECURE (US Alarm Systems): Provider of remote video surveillance, live video monitoring, and guarding services for commercial and multifamily properties — directly overlaps with Protos' Remote Services offering and tech-enabled guarding model.
Others
- Stance Global / Allied Universal Technology Services: Tech-enabled security program management and analytics platforms serving enterprise guarding buyers; comparable as adjacent software-and-data vendors that build the management layer for physical security at scale.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Protos Security social profiles
Digital presenceProtos Security compliance and trust
Trust signalCompliance13 records
Protos Security financial estimates
Financial estimateRevenue estimate
Valuation estimate
Protos Security leadership team
Management profileNumber of profiles
Profiles18 records
Protos Security subsidiaries and ownership
Company hierarchySubsidiaries7 records
Protos Security funding detail
Funding detailFunding overview
Funding rounds1 record
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Protos Security M&A and investment
M&A and investmentM&A8 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Protos Security
What does Protos Security do?
Protos Security is a tech-enabled managed security services provider that delivers physical guarding, off-duty law enforcement, specialized (executive protection, investigations, high-value transport), and remote video guarding services to enterprise clients across all 50 U.S. states. The company operates a proprietary Dynamic Security Management Platform that orchestrates a nationwide network of 2,800+ vetted local security vendors and 60,000+ off-duty law enforcement personnel, providing clients with a single point of contact, real-time visibility, and data-validated billing.
Is Protos Security a public or private company?
Protos Security is a private company. It is classified as private equity controlled and is currently operating.
When was Protos Security founded?
Protos Security was founded in 2006. It employs 251 to 500 people.
Where is Protos Security based?
Protos Security is headquartered in Norwalk, United States, in the North America region.
How does Protos Security make money?
Four revenue lines are on record. Managed Security Services - Guarding is the primary driver. The others are off-Duty Law Enforcement Services, remote Video Guarding and specialized Security Services.
Who are Protos Security's main competitors?
Broad incumbents on record are Allied Universal, Securitas, GardaWorld, Prosegur and Brink's. Direct peers are Sunstates Security and United Security. Emerging players are National Security & Protection Services and ECAMSECURE (US Alarm Systems). Stance Global / Allied Universal Technology Services is listed as an others.
Does Protos Security have an API?
Yes. Protos Security offers API integrations with third-party platforms. Confirmed integrations include: (1) API integration with CAP Index for risk assessment data, enabling comparison of risks projected by CAP Index and actual incidents occurring at each location through Protos data; (2) API integration between Protos client portal and Oracle-based proprietary requisition programs, allowing work orders to be processed directly through the requisition system; (3) Data feed integration with ThinkLP (loss prevention software) with multiple export options for comprehensive loss prevention and asset protection programs. The company supports API connectivity for enterprise clients, though no standalone public API documentation portal was identified in the source material.
What industry is Protos Security in?
Protos Security's product category is Managed Security Services. Its primary akta.pro industry code is BPAKAAAN, Temporary / Rapid Deployment Guarding (Surge & Short-Term Coverage), with a secondary code of BPABAMAD, Executive Protection & Close Protection. Its NAICS code is 561612 and its SIC code is 7381.