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Top Security Companies in Houston, TX (70)

Dragos
Security • Cybersecurity
6 Offices
295 Employees
32 Benefits Hiring Now
Join a mission that can save the world.

Dragos is an industrial (OT/ICS/IIoT) cybersecurity company on a mission to safeguard civilization. Our integrated software platform provides critical visibility into ICS and OT networks so that threats are identified, and can be addressed before they become significant events, our solutions are optimized for emerging applications like the Industrial Internet of Things (IIoT), enabling our clients in power and water...

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Dragos

Dragos's Top Stability & Growth Strengths

Strong Revenue Growth: The combined Dragos/runZero/NetRise business is described as having materially higher annual recurring revenue by mid-2026, pointing to robust year-over-year momentum. Although the figure reflects the group rather than Dragos alone, it demonstrates significant demand and scale around the platform.

Investor Backing & Capital Strength: A majority investment by Accenture at a multibillion-dollar valuation, together with substantial prior funding, indicates strong financial support and confidence in future expansion. This capital access is positioned to accelerate go-to-market reach and platform scaling.

Product Line Growth: Acquisitions of Phosphorus, runZero, and NetRise in 2026 expanded the offering from core OT security into xOT, exposure management, and software supply-chain security. This broadening of scope increases the addressable market and deepens the platform’s relevance.

Liongard
Cloud • Security • Software
Houston
104 Employees
23 Benefits Hiring Now

Liongard unifies and automates the management and protection of modern IT environments at scale for MSPs and Enterprise IT Operations.

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Liongard
VSC Fire & Security, Inc.
30 Offices
799 Employees
24 Benefits Hiring Now
Fire safety: Inspection and installation of fire sprinkler, fire alarm, security, life safety and low voltage systems.

For more than 65 years, VSC Fire & Security, has partnered with thousands of customers as a trusted contractor for the inspection and installation of fire sprinkler, fire alarm, security, life safety and low voltage systems. VSC Fire & Security, has over 1,800 talented employees, and more than 950 vehicles throughout our footprint which spans the East Coast, and West...

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VSC Fire & Security, Inc.
Firetrol Protection Systems, Inc.
Professional Services • Security • Industrial • Manufacturing
3 Offices
660 Employees
Hiring Now

Firetrol Protection Systems is a full-service fire protection and life safety contractor. The company specializes in the design, fabrication, installation, inspection, and maintenance of a wide range of fire suppression, alarm, and integrated security systems. Serving diverse sectors including healthcare, industrial, government, and commercial properties, Firetrol provides comprehensive life safety solutions through its experienced team of engineers, technicians, and project...

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Firetrol Protection Systems, Inc.
Viking Group Inc.
Professional Services • Security • Industrial • Manufacturing
32 Offices
333 Employees
36 Benefits Hiring Now

Viking Group Inc. designs, manufactures, and distributes fire protection and life safety systems, offering a comprehensive range of products and global services.

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Viking Group Inc.
Parsons Corporation
Information Technology • Security • Cybersecurity
33 Offices
14,420 Employees
31 Benefits Hiring Now

Parsons is a digitally enabled solutions provider with a focus on making the world safer, smarter, healthier, more sustainable, and more connected. Founded in 1944, Parsons primarily serves the defense, security, and infrastructure markets. Uniquely qualified to deliver cyber/converged security, technology-based intellectual property, and other innovative services, the corporation delivers state-of-the-art solutions to federal, regional, and local government agencies as...

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Parsons Corporation

Parsons Corporation's Top Stability & Growth Strengths

Strong Market Position & Advantage: Parsons is positioned as a leader in key niches, supported by independent rankings such as ENR’s No. 1 global program management placement and strong standings in design/engineering and defense-revenue lists. Contract momentum with multiple large single-award wins and a sizable pipeline further reinforces competitive strength in its priority lanes.

Profitability: Profitability appears to be improving even amid revenue variability, with record adjusted EBITDA margin and record net income cited for 2025. This indicates stronger mix, pricing, and execution discipline that supports resilience through topline fluctuations.

Resilient & Sustainable Growth: Visibility into forward work is supported by a large backlog and a record funded-backlog level, which improves near-term conversion potential. Management guidance pointing to a return to revenue growth and continued EBITDA expansion adds to the view that the core portfolio is stabilizing after a one-program step-down.

FTI Consulting
Security • Software • Consulting
26 Offices
7,650 Employees
35 Benefits Hiring Now

FTI Consulting, Inc. is an independent global business advisory firm dedicated to helping organizations manage change, mitigate risk and resolve disputes: financial, legal, operational, political & regulatory, reputational and transactional. FTI Consulting professionals, located in all major business centers throughout the world, work closely with clients to anticipate, illuminate and overcome complex business challenges and opportunities.

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FTI Consulting

FTI Consulting's Top Stability & Growth Strengths

Strong Revenue Growth: Revenue has set records for multiple consecutive years and continued to rise in early 2026, with guidance reaffirmed for further increases. Growth was supported by demand in Corporate Finance, Strategic Communications, and Technology.

Strong Brand Reputation: The firm is repeatedly recognized across independent rankings and awards, including top placements in management consulting, litigation support, crisis communications, and expert-witness economics. Such recognition aligns with its role on high-profile, complex mandates globally.

Diversified Customer Base: The client roster includes the vast majority of leading law firms, many Fortune 100 companies, top private equity firms, and major banks. This breadth indicates exposure to multiple industries and matter types across geographies.

Acadian Companies
Healthtech • Professional Services • Security • Transportation
17 Offices
4,000 Employees
3 Benefits Hiring Now

Acadian Companies, founded in 1971, is a diverse group specializing in medical transportation, pre-hospital care, healthcare, safety, security, training, and charter flight services.

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Acadian Companies
Vivint
Hardware • Internet of Things • Other • Security
26 Offices
10,001 Employees
30 Benefits Hiring Now

Vivint Smart Home is a leading smart home company in North America. Vivint delivers an integrated smart home system with in-home consultation, professional installation and support delivered by its Smart Home Pros, as well as 24/7 customer care and monitoring. Dedicated to redefining the home experience with intelligent products and services, Vivint serves more than 1.7 million customers throughout the...

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Vivint
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International SOS
Healthtech • Security
58 Offices
11,057 Employees
28 Benefits Hiring Now

The International SOS Group of Companies is in the business of saving lives, protecting global workforces from health and security threats. We deliver customised health, security risk management and wellbeing solutions to fuel our clients’ growth and productivity. In the event of extreme weather, an epidemic or a security incident, we provide an immediate response providing peace of mind. Our...

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International SOS
NETSYNC
Cloud • Information Technology • Security • Cybersecurity
10 Offices
450 Employees
11 Benefits Hiring Now

Netsync specializes in collaboration & unified communications, data center and cloud, network infrastructure and others. NETSYNC is an NMSDC-certified minority business enterprise (MBE), federally certified woman-owned small business (WOSB), and HUB-certified value-added reseller (VAR), specializing in the implementation of comprehensive IT life cycle solutions for a wide array of organizations. As a Cisco Gold, Master Collaboration, and Master Security Partner; an HP...

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NETSYNC
Action1 Corporation
Information Technology • Security • Software
Houston
89 Employees
Hiring Now

Action1 is an autonomous endpoint management platform that is cloud-native, infinitely scalable, highly secure, and configurable in 5 minutes—it just works and is always free for the first 200 endpoints, with no functional limits. By pioneering autonomous OS and third-party patching - AEM’s foundational use case - through peer-to-peer patch distribution and real-time vulnerability assessment without needing a VPN, it...

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Action1 Corporation
Kroll
Big Data • Security • Software • Analytics • Cybersecurity
25 Offices
5,001 Employees
17 Benefits Hiring Now

Kroll is the world’s premier provider of services and digital products related to valuation, governance, risk and transparency. We work with clients across diverse sectors in the areas of valuation, expert services, investigations, cyber security, corporate finance, restructuring, legal and business solutions, data analytics and regulatory compliance. Our firm has nearly 5,000 professionals in 30 countries and territories around the...

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Kroll

Kroll's Top Stability & Growth Strengths

Strong Market Position & Advantage: Multiple third-party descriptions and industry recognitions portray Kroll as a leading independent provider in financial and risk advisory, with top placements in areas like fairness opinions and investigations/forensics. Scale signals such as a global workforce and long operating history reinforce a durable competitive position.

Market Expansion: Evidence points to active expansion through new practices (e.g., Economics and Decision Intelligence), geographic build-outs, and acquisitions across regions including APAC, Europe, and Latin America. Announcements of added services and locations indicate an expanding footprint.

Diversified Revenue Streams: A broad portfolio spanning valuation, investigations, due diligence, compliance, cyber/MDR/IR, restructuring, and agency/trustee services suggests multiple demand drivers. Recognition across several distinct service lines implies revenue is not dependent on a single offering.

PINKERTON
Security
56 Offices
1,604 Employees
9 Benefits Hiring Now

Pinkerton traces its roots to 1850 when Allan Pinkerton founded Pinkerton's National Detective Agency. Today, Pinkerton offers organizations a range of comprehensive risk management services from security consulting and investigations to executive protection, employment screening and protective intelligence. With employees and offices worldwide, Pinkerton maintains an unmatched reputation for protecting clients and their assets around the globe.

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PINKERTON
Aventiv Technologies
Big Data • Information Technology • Security • Software
5 Offices
1,001 Employees
32 Benefits Hiring Now

Aventiv Technologies is a diversified technology company that provides innovative solutions to customers in the corrections and government services sectors. Aventiv is the parent company to Securus Technologies and AllPaid, leading providers of innovative products and services. The collective power of these unified organizations deliver superior value and service to all of our customers nationwide. We believe society improves when modern...

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Aventiv Technologies
Marksman Security Corporation
Information Technology • Security
13 Offices
650 Employees
15 Benefits Hiring Now

Marksman Security Corporation is a public safety company that offers security guards and residential security services.

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Marksman Security Corporation
Johnson Controls
Other • Security
55 Offices
100,000 Employees
39 Benefits Hiring Now

At Johnson Controls, we transform the environments where people live, work, learn and play. From optimizing building performance to improving safety and enhancing comfort, we drive the outcomes that matter most. Dedicated to protecting the environment, we deliver our promise in industries such as healthcare, education, data centers and manufacturing. With a global team of 100,000 experts in more than...

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Johnson Controls

Johnson Controls's Top Stability & Growth Strengths

Strong Market Position & Advantage: Johnson Controls is characterized as a global leader by share and scale in building automation and integrated commercial building technologies, supported by a broad end-to-end portfolio across controls, HVAC, fire, security, and services.

Strong Revenue Growth: Recent performance indicates accelerating growth signals, including mid-single-digit organic sales growth alongside exceptional order momentum and a record backlog that supports forward revenue conversion.

Profitability: Earnings power appears to be improving, with adjusted EPS growth and margin expansion in recent quarters, reinforced by management raising full-year EPS guidance.

Signal 88 Security
21 Offices
950 Employees
15 Benefits Hiring Now

Signal 88 Security is a security and investigations company providing virtual monitoring, fire watch, and patrolling services.

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Signal 88 Security
Raptor Technologies
Information Technology • Security • Software
Houston
155 Employees
13 Benefits Hiring Now

Raptor is driven by our mission to protect every child, every school, every day. Founded in 2002, Raptor provides integrated school safety software enabling schools to safeguard students and staff, screen visitors, track volunteers, report on drills, respond to emergencies, and reunite families. Raptor is trusted by over 50,000 schools worldwide to keep staff and children safe.

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Raptor Technologies
Andy Frain Services
Events • Professional Services • Security • Industrial
13 Offices
3,979 Employees
14 Benefits Hiring Now

Andy Frain Services leads in comprehensive security and event solutions, delivering reliable business security for offices, warehouses, plants, and facilities.

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Andy Frain Services

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