The 57 largest cybersecurity companies in Texas (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	HID hidglobal.com It provides secure identification and verification solutions for people and things, enabling safe transactions and access to physical and digital environments.	Security and Investigations	🇺🇸 Austin	4,088	n/a
2	Trellix trellix.com Delivers intelligence-led cyber resilience for security-conscious organizations. Transforms threat intelligence into high-fidelity detections and automates AI-driven detection and response across diverse environments.	Computer and Network Security	🇺🇸 Plano	3,827	2022
3	SailPoint sailpoint.com Provides an identity security platform to manage and secure access to applications and data, defending against cyber threats and enhancing productivity for enterprises.	Software Development	🇺🇸 Austin	3,699	2005
4	Quest Software quest.com Provides software solutions for data management, cybersecurity, and platform modernization, enabling organizations to build trusted foundations for AI success with speed and confidence.	Software Development	🇺🇸 Austin	3,567	n/a
5	MOURI Tech mouritech.com Global Enterprise Solutions Provider partnering with Fortune 500 companies, offering innovative services in enterprise transformation, cloud strategy, analytics, and application development	IT Services and IT Consulting	🇺🇸 Irving	3,521	2005
6	NinjaOne ninjaone.com Provides automated management, patching, and visibility for endpoints, ensuring security and efficiency for organizations of all sizes worldwide.	Software Development	🇺🇸 Austin	2,376	n/a
7	Forcepoint forcepoint.com Simplifies security for global businesses and governments, making it easy to adopt Zero Trust and prevent sensitive data theft or loss everywhere.	Software Development	🇺🇸 Austin	1,651	1994
8	Thales Cybersecurity Products thalesgroup.com Thales Cloud Security specializes in protecting cloud, data, and access for organizations, ensuring privacy and compliance through encryption strategies and trusted solutions	Computer and Network Security	🇺🇸 Austin	1,482	n/a
9	Island island.io Enterprise browser providing organizations complete control, visibility, and governance over work environments with a secure, smooth Chromium-based experience.	Technology, Information and Internet	🇺🇸 Dallas	1,371	2020
10	GDT - General Datatech gdt.com An international IT solutions provider offering consulting, designing, deploying, and managing services for businesses, government, and healthcare, specializing in advanced technology solutions	IT Services and IT Consulting	🇺🇸 Dallas	1,317	1996
11	Imperva imperva.com A cybersecurity company that protects applications, APIs, and data with integrated edge, application, and data security solutions, backed by threat research and global intelligence	Computer and Network Security	🇺🇸 Austin	1,265	2002
12	Flō Networks flo.net Flō Networks provides high-performance network services for organizations, offering scalable, transparent architecture for configuring and managing services across networks	Telecommunications	🇺🇸 El Paso	1,227	2001
13	[redacted]redacted.com Specializing in threat actor analysis, we offer clients actionable intelligence to effectively combat and minimize the impact of adversaries with our expertise and experience	Computer and Network Security	🇺🇸 Austin	1,081	2015
14	PAS hexagon.com A global leader in delivering software solutions for industrial organizations to prevent cyber threats, reduce safety risks, and optimize profitability	Software Development	🇺🇸 Houston	1,052	n/a
15	ABS Consulting abs-group.com Stay updated with valuable content and expert insights from our Knowledge Center by following our official LinkedIn page Visit our website for more information	Business Consulting and Services	🇺🇸 Spring	933	1991
16	INTECH Automation & Intelligence intechww.com Providing industrial automation, control, and digitalization solutions with expertise in instrumentation, IoT, and long-term client partnerships.	Automation Machinery Manufacturing	🇺🇸 Houston	919	1992
17	Synack Red Team synack.com Private freelance security researchers provide web, mobile, and host infrastructure penetration testing engagements globally, offering opportunities for skilled individuals.	Computer and Network Security	🇺🇸 Austin	894	2013
18	AT&T Cybersecurity att.com Specializing in cybersecurity, this company offers edge-to-edge technologies, threat intelligence, collaborative defense, and tailored solutions to protect businesses worldwide	Computer and Network Security	🇺🇸 Dallas	881	n/a
19	LevelBlue levelblue.com Reduces organizational risk and builds lasting resilience through AI-powered security operations, threat intelligence, and expert advisory, managed, offensive, and incident response services.	Computer and Network Security	🇺🇸 Dallas	790	n/a
20	Buchanan Technologies buchanan.com Leading IT consulting and outsourcing firm offering a wide range of technology services, from managed operations and cybersecurity to digital workplace solutions and IT staffing	IT Services and IT Consulting	🇺🇸 Grapevine	783	1988
21	Network Intelligence networkintelligence.ai Combines security professionals with AI to manage security and compliance outcomes, including SOC2 certification, vulnerability management, and detection and response programs.	Computer and Network Security	🇺🇸 Plano	667	2001
22	Securonix securonix.com Transforms security operations delivery, measurement, and scalability with a cloud-native platform unifying SIEM, UEBA, SOAR, TIP, and TDIR for faster threat detection, investigation, and response.	Computer and Network Security	🇺🇸 Plano	654	2008
23	Silverfort silverfort.com Provides an end-to-end identity security platform, protecting all identities, human and machine, across on-premise and cloud environments, minimizing attack surfaces.	Computer and Network Security	🇺🇸 Plano	634	2016
24	Meriplex meriplex.com A provider of managed technology solutions specializing in Intelligent WAN, Cybersecurity, Physical Security, Cloud, and Voice services for enabling business transformation and growth	IT Services and IT Consulting	🇺🇸 Houston	587	n/a
25	NETSYNC netsync.com Specializes in comprehensive IT lifecycle solutions, partnering with leading tech firms to serve education, government, and corporate sectors.	IT Services and IT Consulting	🇺🇸 Houston	583	2002
26	Anaconda, Inc.anaconda.com Empowers builders, enterprises to secure, orchestrate, accelerate data and AI at scale. Provides a centralized approach for AI deployment.	Software Development	🇺🇸 Austin	583	2012
27	CMIT Solutions cmitsolutions.com A premier IT solution provider delivering enterprise-class support and technology services for businesses in North America, ensuring efficient and reliable IT environments	IT Services and IT Consulting	🇺🇸 Austin	552	1996
28	Ultra Intelligence & Communications ultra-ic.com Delivering crucial communication, command, control, and cyber solutions for complex environments, reshaping the future of connected digital battlespace with expertise and cutting-edge technology	Defense and Space Manufacturing	🇺🇸 Austin	479	n/a
29	SEON seon.io Platform enhancing fraud prevention and AML compliance with real-time data signals, enabling smarter risk decisions and streamlined workflows globally.	Software Development	🇺🇸 Austin	412	2017
30	Critical Start criticalstart.com Provides managed detection and response services, focusing on swift and accurate threat resolution with guaranteed response times and comprehensive coverage.	Computer and Network Security	🇺🇸 Plano	272	2012
31	Zix zix.com Leader in email security providing solutions for encryption, data loss prevention, advanced threat protection, archiving, and cloud backup to secure data and meet compliance needs	Software Development	🇺🇸 Dallas	241	1998
32	TFE tfeconnect.com A technology solutions provider specializing in infrastructure, unified communications, audio/visual, data center, and security for education, government, commercial, and healthcare industries	IT Services and IT Consulting	🇺🇸 Hewitt	179	1998
33	Wallarm wallarm.com Provides an API security platform that stops cyberattacks, offering API inventory, AI/ML-based abuse detection, real-time blocking, and an API SOC-as-a-service.	Computer and Network Security	🇺🇸 Austin	175	2016
34	SecureLink imprivata.com Industry leader in critical access management, empowering organizations to secure network, system, and data access using Zero Trust principles and advanced security solutions	Software Development	🇺🇸 Austin	128	2003
35	Dispel dispel.com Delivers cybersecurity for industrial operations, unifying secure remote access, industrial data streaming, identity, intelligence, and compliance into a single platform.	Computer and Network Security	🇺🇸 Austin	112	2014
36	IPSecure, Inc ipsecureinc.com A leading provider of Cyber Security Solutions offering information assurance, risk management, policy development, software development, network security, and more Founded in 2000	IT Services and IT Consulting	🇺🇸 San Antonio	95	2000
37	Theori theori.io A cybersecurity startup focused on conquering difficult challenges, leading innovation in offensive cybersecurity, and solving the impossible with technology-driven approaches	Computer and Network Security	🇺🇸 Austin	88	2016
38	Active Cyber activecyber.com Empower organizations to achieve agile business decisions through cutting-edge cybersecurity, enterprise planning, and data analytics solutions, fostering collaboration and innovation	IT Services and IT Consulting	🇺🇸 Dallas	62	2013
39	Nudge Security nudgesecurity.com Nudge Security helps organizations manage SaaS security at scale by providing visibility of all SaaS assets and nudging employees towards secure practices	Computer and Network Security	🇺🇸 Austin	46	2022
40	9STAR 9starinc.com Innovative full-stack cloud IT security company providing cutting-edge solutions globally, specializing in reducing IT risks and costs while improving user experience	Computer and Network Security	🇺🇸 Austin	44	2002
41	NexGenTek, Inc.spearheadtechnology.com A company dedicated to driving digital transformations, creating value, and empowering enterprises to lead and innovate in the market	IT Services and IT Consulting	🇺🇸 Dallas	43	2008
42	Ikon Tech ikon-tech.com A leading cybersecurity and IT infrastructure management company, offering tailored solutions for businesses, governments, and digital transformation through innovation and expertise	IT Services and IT Consulting	🇺🇸 Houston	36	2012
43	SolCyber solcyber.com A modern MSSP offering streamlined, accessible, and affordable security tools and services to reduce cyber risk, wastage, and complexity for organizations	Computer and Network Security	🇺🇸 Dallas	29	2021
44	Kiuwan kiuwan.com A company offering comprehensive application security solutions through an end-to-end platform, empowering executives and developers with state-of-the-art security features	Software Development	🇺🇸 Houston	27	2012
45	Proactive Communications proactivecommo.com Global provider of integrated communications and IT management services, offering network security, LAN/WAN designs, engineering, and installation services worldwide	IT Services and IT Consulting	🇺🇸 Killeen	25	2000
46	Softex Incorporated omnidefend.com A market leader in security-focused software solutions since 1992, providing Enterprise Single Sign-On, Identity and Access Management, and Data Protection services to various industries	Software Development	🇺🇸 Austin	23	1992
47	Mindfore Technologies mindfore.com The company provides top-quality technology solutions and supports clients in managing and elevating their businesses with the best talent	IT Services and IT Consulting	🇺🇸 Houston	17	2016
48	Temple IT temple-it.com A trusted IT solution partner offering professional services, managed services, cybersecurity, and more to meet all your IT needs	IT Services and IT Consulting	🇺🇸 Frisco	17	1994
49	Intras Cloud Services intrascloudservices.com A technology company offering cloud-based business solutions and services, delivered by expert IT consultants and strategic global partners	IT Services and IT Consulting	🇺🇸 Dallas	16	2013
50	Fabor fabor.io Helps control risks towards cyber threats by providing cybersecurity services, ensuring robust protection and proactive defense against potential attacks and vulnerabilities.	IT Services and IT Consulting	🇺🇸 Paris	8	2023
51	Aurenav LLC aurenav.com International company providing Enterprise Architecture, ICT Security, Business Services, and Web Services across 65+ countries Diverse IT solutions and services	IT Services and IT Consulting	🇺🇸 Arlington	7	1981
52	Solo Solutions Inc solosolutions.us A strategic service provider specializing in technology solutions for business agility, offering network & infrastructure, security & compliance, systems & virtualization, and unified communications services	IT Services and IT Consulting	🇺🇸 Richmond	7	2003
53	Onexte onexte.com A strategic partner specializing in integrated security, cloud solutions, and data management, delivering exceptional services and expertise to support client goals	IT Services and IT Consulting	🇺🇸 Plano	6	2011
54	Katana Global, LLC katanaglobal.com A leading Managed IT Services Provider offering hardware/software setup, server hosting, network security, cloud services, disaster recovery, and data center services	IT Services and IT Consulting	🇺🇸 The Woodlands	5	2015
55	DAR Technology,LLC dartechservices.com An IT outsourcing company specializing in technology solutions, consulting services, software innovation, and customer support, including portfolio management, data analytics, and project implementation	IT Services and IT Consulting	🇺🇸 Dallas Fort Worth	5	2016
56	Adaptus, LLC ezprotect.io A software as a service provider offering cloud-based security solutions for Salesforce and other business tools, specializing in customer-driven product solutions for large enterprises globally	Computer and Network Security	🇺🇸 Austin	3	2002
57	IndusSME LLC indussme.com Technology solutions company offering cybersecurity SaaS platform, talent and shared services, growth and innovation solutions, digital transformation services, and product development	IT Services and IT Consulting	🇺🇸 Dallas	3	2020

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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

The 57 largest cybersecurity companies in Texas

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