# The 50 largest cybersecurity companies in Spain

Tamtam tracks 77 cybersecurity companies headquartered in Spain. This list ranks the 50 largest by number of employees on LinkedIn, led by Minsait, Indra Group and NTT DATA Europe & Latam. Their median headcount is 505. Half of them were founded in 1991 or later. The most common headquarters are Madrid (22), Barcelona (5) and Alcobendas (4).

These are the largest cybersecurity companies based in Spain, primarily large enterprises specializing in IT services and consulting. Companies like Minsait, NTT DATA Europe & Latam, and Telefónica Tech focus on digital transformation, cloud, and security solutions. Indra Group also plays a significant role in defense and space manufacturing with a strong cybersecurity component.

The data shows a strong concentration of these large cybersecurity firms in Madrid. Most of the listed companies are well-established, with several founded in the 1980s and 1990s, such as GMV, Zelenza, and Evolutio Empowering the cloud, indicating a mature market.

🇪🇸 Spain · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Minsait](https://www.tamtam.ai/c/minsait) (minsait.com)<br>A leading Spanish technological consultant operating globally, leveraging cloud, security, payments, and innovative technology to drive business and societal impact #MoreMinsait | IT Services and IT Consulting | 🇪🇸 Alcobendas | 45,000 | 2016 |
| 2 | [Indra Group](https://www.tamtam.ai/c/indra-group) (indragroup.com)<br>Leading multinational providing defense, space, air traffic management, and mobility solutions alongside information technology services, artificial intelligence, cybersecurity, and advanced digital transformation projects. | Defense and Space Manufacturing | 🇪🇸 Madrid | 39,308 |  |
| 3 | [NTT DATA Europe & Latam](https://www.tamtam.ai/c/ntt-data-europe-and-latam) (nttdata.com)<br>Global IT services provider transforming clients through consulting, solutions, and managed services to enable a confident move into the digital future | IT Services and IT Consulting | 🇪🇸 Madrid | 31,932 |  |
| 4 | [Applus+](https://www.tamtam.ai/c/applus) (applus.com)<br>A global leader in testing, inspection, and certification services, providing innovative solutions for asset integrity, regulatory compliance, and environmental performance | Business Consulting and Services | 🇪🇸 Madrid | 20,046 |  |
| 5 | [Accenture España](https://www.tamtam.ai/c/accenture-espana) (accenture.com)<br>A global professional services company helping businesses and governments with digital transformation, cloud technology, data analytics, and industry expertise to drive tangible outcomes | Business Consulting and Services | 🇪🇸 Madrid | 6,208 |  |
| 6 | [KPMG España](https://www.tamtam.ai/c/kpmg-espana) (kpmg.com)<br>Professional services firm providing audit, tax, legal, financial, and business advisory with global expertise and local market knowledge. | Professional Services | 🇪🇸 Madrid | 5,523 |  |
| 7 | [Telefónica Tech](https://www.tamtam.ai/c/telefonica-tech) (telefonicatech.com)<br>Accelerating tech adoption through services in Cyber Security, Cloud, IoT, Big Data, AI, and Blockchain, with a strong presence on social media platforms | Telecommunications | 🇪🇸 Madrid | 4,392 |  |
| 8 | [GMV](https://www.tamtam.ai/c/gmv) (gmv.com)<br>A technologically advanced business group offering solutions and services in various sectors including cybersecurity, defense, healthcare, and intelligent transportation systems | IT Services and IT Consulting | 🇪🇸 Tres Cantos | 4,163 | 1984 |
| 9 | [T-Systems Iberia](https://www.tamtam.ai/c/t-systems-iberia) (t-systems.com)<br>Innovative global company promoting social and ecological well-being through groundbreaking projects, offering opportunities for talent to grow professionally and personally | IT Services and IT Consulting | 🇪🇸 Barcelona | 2,822 | 2001 |
| 10 | [IndraMind Cybersecurity](https://www.tamtam.ai/c/indramind-cybersecurity) (indramindcybersecurity.com)<br>Specialized cybersecurity company offering comprehensive 360º services and digital identity solutions to protect businesses internationally with sector expertise. | IT Services and IT Consulting | 🇪🇸 Alcobendas | 2,000 | 1989 |
| 11 | [Entelgy](https://www.tamtam.ai/c/entelgy) (entelgy.com)<br>A global consultancy that accelerates business transformation through innovative technological solutions, helping clients adapt and thrive in a constantly changing world | IT Services and IT Consulting | 🇪🇸 Madrid | 1,796 |  |
| 12 | [Zelenza](https://www.tamtam.ai/c/zelenza) (zelenza.com)<br>Company offers integrated ICT services, Telco network engineering, defense and security solutions, and customer experience. It helps businesses face digital challenges. | IT Services and IT Consulting | 🇪🇸 Madrid | 1,332 | 1984 |
| 13 | [Sermicro](https://www.tamtam.ai/c/sermicro) (gruposermicro.com)<br>ICT solutions and services integrator of reference with 35+ years of experience, offering innovative technology solutions for businesses worldwide Providing opportunities for professional growth | IT Services and IT Consulting | 🇪🇸 Madrid | 1,239 | 1985 |
| 14 | [LKS NEXT](https://www.tamtam.ai/c/lks-next) (lksnext.com)<br>The company provides comprehensive business consulting services with a focus on technology, finance, and legal support, working closely with clients for transformative and successful outcomes | IT Services and IT Consulting | 🇪🇸 Mondragon - Arrasate | 1,062 | 1991 |
| 15 | [Evolutio Empowering the cloud](https://www.tamtam.ai/c/evolutio-empowering-the-cloud) (evolutio.com)<br>Spanish technology expert specializing in cloud computing, cybersecurity, digital experience, and telecommunications for corporate and public entities With over 30 years of experience | IT Services and IT Consulting | 🇪🇸 Madrid | 928 | 1989 |
| 16 | [TRC](https://www.tamtam.ai/c/trc) (trc.es)<br>An alliance of companies specializing in technology integration, telecommunications networks, data center deployment, software development, cybersecurity, and cloud services | Technology, Information and Internet | 🇪🇸 Madrid | 902 | 1989 |
| 17 | [S2GRUPO](https://www.tamtam.ai/c/s2grupo) (s2grupo.es)<br>European company specializing in cybersecurity, cyberintelligence, and cyberdefence, protecting critical infrastructures and strategic sectors with advanced solutions, integrating IT and OT for operational resilience. | Computer and Network Security | 🇪🇸 Valencia | 768 | 1999 |
| 18 | [MTP Métodos y Tecnología](https://www.tamtam.ai/c/mtp-metodos-y-tecnologia) (mtp.es)<br>Specialized consultancy providing Software Quality Assurance services to improve costs, deadlines, and quality of software products for Telecom, Banking, Insurance, Utilities, and Public Sector | IT Services and IT Consulting | 🇪🇸 Madrid | 749 | 1997 |
| 19 | [IKUSI](https://www.tamtam.ai/c/ikusi) (ikusi.com)<br>Specializing in IT and communication technologies, the company offers secure information management and digital solutions for various industries to streamline business processes and drive digital transformation | Telecommunications | 🇪🇸 San Sebastián | 702 |  |
| 20 | [SIRT](https://www.tamtam.ai/c/sirt) (sirt.es)<br>With a focus on expertise, specialization, and quality service, this company provides advanced IT solutions to optimize processes for businesses and public entities since 1998 | Telecommunications | 🇪🇸 Barcelona | 689 | 1998 |
| 21 | [SIA Group](https://www.tamtam.ai/c/sia-group-alcobendas) (indramindcybersecurity.com)<br>Leading cybersecurity company in Spain and Portugal, offering tailored solutions to combat digital threats and maximize protection for businesses Part of global Indra Group | IT Services and IT Consulting | 🇪🇸 Alcobendas | 672 | 1989 |
| 22 | [Logicalis Spain](https://www.tamtam.ai/c/logicalis-spain) (logicalis.com)<br>Logicalis is an integrator of infrastructure and technological solutions, offering high support for businesses to simplify processes, make informed decisions, and achieve better results | IT Services and IT Consulting | 🇪🇸 Barcelona | 635 |  |
| 23 | [Cibernos](https://www.tamtam.ai/c/cibernos) (grupocibernos.com)<br>A Spanish IT consulting and services company with nearly 1,000 employees in Spain and Latin America, offering integrated solutions tailored to clients' needs | IT Services and IT Consulting | 🇪🇸 Madrid | 580 | 1966 |
| 24 | [Integra](https://www.tamtam.ai/c/integra) (integratecnologia.es)<br>Technology consulting company focused on digital transformation, offering innovative solutions and strategic expertise with national presence and strong industry alliances. | IT Services and IT Consulting | 🇪🇸 Zaragoza | 524 | 1986 |
| 25 | [MNEMO](https://www.tamtam.ai/c/mnemo) (mnemo.com)<br>A Spanish company specializing in cybersecurity & technology, providing services internationally Offering end-to-end solutions for various industries with a focus on innovation & excellence | IT Services and IT Consulting | 🇪🇸 Madrid | 505 |  |
| 26 | [SEMIC](https://www.tamtam.ai/c/semic) (semic.es)<br>A company providing valuable IT services and solutions focused on knowledge, security, and sustainability for over 40 years Efficiently managing technological and human resources | IT Services and IT Consulting | 🇪🇸 Lleida | 503 | 1982 |
| 27 | [Abast](https://www.tamtam.ai/c/abast) (abast.es)<br>Provides integrated technology solutions including cloud computing, managed services, security, business analytics, applications, and data center infrastructure for businesses. | IT Services and IT Consulting | 🇪🇸 Barcelona | 499 | 1984 |
| 28 | [FNMT-RCM](https://www.tamtam.ai/c/fnmt-rcm) (fnmt.es)<br>A public entity focused on providing services with a strong emphasis on security and strict production control, collaborating with private entities when necessary | IT Services and IT Consulting | 🇪🇸 Madrid | 459 | 1893 |
| 29 | [Aire](https://www.tamtam.ai/c/aire-elche) (airetech.es)<br>Innovative telecommunications group providing voice, audiovisual, cloud, and data center solutions to national and international clients with a focus on nature and technology | Telecommunications | 🇪🇸 Elche | 446 |  |
| 30 | [IKERLAN](https://www.tamtam.ai/c/ikerlan) (ikerlan.es)<br>A leading technology center offering competitive value to industry through digital technologies, artificial intelligence, cybersecurity, mechatronics, and energy solutions | Research Services | 🇪🇸 Arrasate-Mondragón | 438 | 1974 |
| 31 | [Panda Security](https://www.tamtam.ai/c/panda-security) (pandasecurity.com)<br>European company specializing in advanced cybersecurity solutions and services, providing EDR systems, management, and monitoring tools to clients worldwide. | Computer and Network Security | 🇪🇸 Bilbao | 391 | 1990 |
| 32 | [Excelia](https://www.tamtam.ai/c/excelia-pozuelo-de-alarcon) (excelia.com)<br>International firm offering Consulting, Technology, Accounting & Tax, and Talent services in over 50 countries, specializing in digital transformation and tech talent solutions | IT Services and IT Consulting | 🇪🇸 Pozuelo de Alarcón | 370 | 1999 |
| 33 | [Signaturit Group a Namirial Company](https://www.tamtam.ai/c/signaturit-group-a-namirial-company) (signaturit.com)<br>It provides a modular platform for secure digital transactions, focusing on identity management, electronic signatures, and operational efficiency through automation. | IT Services and IT Consulting | 🇪🇸 Barcelona | 352 |  |
| 34 | [Scalian Spain](https://www.tamtam.ai/c/scalian-spain) (scalian-spain.es)<br>Scalian Spain specializes in creating tailored solutions to drive business performance, develop innovative products, optimize strategic plans, and improve data insights | IT Services and IT Consulting | 🇪🇸 Madrid | 350 | 1989 |
| 35 | [Facephi](https://www.tamtam.ai/c/facephi) (facephi.com)<br>This company provides an AI/ML-powered platform for digital identity verification, fraud prevention, and regulatory compliance, ensuring secure and accessible digital processes for clients globally. | Software Development | 🇪🇸 Alicante | 331 | 2012 |
| 36 | [Grupo ICA](https://www.tamtam.ai/c/grupo-ica) (grupoica.com)<br>Providing digital transformation, cybersecurity, communication infrastructure, and IT professional services tailored to public and private sector needs. | IT Services and IT Consulting | 🇪🇸 Madrid | 331 | 1983 |
| 37 | [Grupo TECDATA Engineering](https://www.tamtam.ai/c/grupo-tecdata-engineering) (tecdata.es)<br>Provides IT services and professional technology solutions with own infrastructure in Spain, focusing on client needs and business optimization. | IT Services and IT Consulting | 🇪🇸 Madrid | 328 | 2018 |
| 38 | [INCIBE - Instituto Nacional de Ciberseguridad](https://www.tamtam.ai/c/incibe-instituto-nacional-de-ciberseguridad) (incibe.es)<br>Researching, providing services, and collaborating to raise cybersecurity awareness and protect internet users. Offers a helpline for assistance. | Government Administration | 🇪🇸 León | 324 | 2006 |
| 39 | [Thales Cybersecurity Services – Spain/Portugal](https://www.tamtam.ai/c/thales-cybersecurity-services-spain-portugal) (thalesgroup.com)<br>Offers cybersecurity products and services to keep people and assets safe, reinforcing trust and resilience in processes and infrastructures for global organizations. | Computer and Network Security | 🇪🇸 Madrid | 317 | 2000 |
| 40 | [Thales en España](https://www.tamtam.ai/c/thales-en-espana) (thalesgroup.com)<br>Leading multinational in defense, aerospace, cybersecurity, and digital identity with multiple centers and 1,300 employees across Spain. | IT Services and IT Consulting | 🇪🇸 Madrid | 292 |  |
| 41 | [Teldat](https://www.tamtam.ai/c/teldat) (teldat.com)<br>A Spanish company providing innovative solutions for cloud access, remote office communications, cybersecurity, and connectivity in various environments Leaders in European corporate communications market | Telecommunications | 🇪🇸 Madrid | 290 | 1984 |
| 42 | [Ingenia](https://www.tamtam.ai/c/ingenia) (babelgroup.com)<br>A specialized IT consulting firm with lines of business in security, engineering, communications, quality improvement, open data, smart cities, new media, and cloud services Founded in 1992 with offices in multiple locations | IT Services and IT Consulting | 🇪🇸 Málaga | 280 | 1992 |
| 43 | [Quintas Energy](https://www.tamtam.ai/c/quintas-energy) (quintasenergy.com)<br>A company dedicated to promoting sustainable energy sources and combating climate change by changing attitudes and managing renewable energy effectively | Services for Renewable Energy | 🇪🇸 Seville | 278 | 2008 |
| 44 | [INNOVASUR](https://www.tamtam.ai/c/innovasur) (innovasur.com)<br>Andalusian technology-based company specializing in Smart City, IT Infrastructure, and Cybersecurity solutions for the private sector and public administrations Creating secure, connected, sustainable futures | Telecommunications | 🇪🇸 Jaén | 272 | 2007 |
| 45 | [fibratel](https://www.tamtam.ai/c/fibratel) (fibratel.com)<br>With over 30 years of experience, the company focuses on digitalization, IT security, networking solutions, and 360º managed services to protect businesses from cyber threats | IT Services and IT Consulting | 🇪🇸 Madrid | 262 | 1992 |
| 46 | [Cuatroochenta](https://www.tamtam.ai/c/cuatroochenta) (cuatroochenta.com)<br>Cuatroochenta specializes in developing digital solutions and cybersecurity to enhance organizational performance, serving clients in Europe, Latin America, and North America | IT Services and IT Consulting | 🇪🇸 Castellón | 242 | 2011 |
| 47 | [OmniAccess](https://www.tamtam.ai/c/omniaccess) (omniaccess.com)<br>A leading provider of premium digital solutions in the maritime industry, guaranteeing the best onboard digital experience while prioritizing data security | IT Services and IT Consulting | 🇪🇸 Palma | 229 | 2007 |
| 48 | [Gigas](https://www.tamtam.ai/c/gigas) (gigas.com)<br>Established in 2011, this international group delivers communication and cloud services with 11 data centers in Europe and Latin America, prioritizing Peace of Mind as a Service | IT Services and IT Consulting | 🇪🇸 Alcobendas | 225 | 2011 |
| 49 | [Ricoh Cloud & Cyber](https://www.tamtam.ai/c/ricoh-cloud-and-cyber) (ipm.es)<br>Specialized cloud, infrastructure, and cybersecurity solutions provider accelerating digital transformation with secure, innovative, and sustainable technologies for businesses. | IT Services and IT Consulting | 🇪🇸 Sant Cugat del Vallès | 222 | 1980 |
| 50 | [CONVOTIS Iberia](https://www.tamtam.ai/c/convotis-iberia) (convotis.com)<br>A technology development company based in Alicante, providing customized digital solutions, competitive advantages, and technical excellence through innovation and expertise Founded in 2002 | IT Services and IT Consulting | 🇪🇸 Elche | 217 | 2002 |

## How this list is built

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 Nov 12, 2026.

## More company lists in Spain

- [The largest companies in Spain](https://www.tamtam.ai/l/largest-companies-spain) (10,893)
- [Multinational companies in Spain](https://www.tamtam.ai/l/multinational-companies-spain) (2,706)
- [Retail chains in Spain](https://www.tamtam.ai/l/retail-chains-spain) (1,251)
- [Manufacturers in Spain](https://www.tamtam.ai/l/manufacturers-spain) (1,080)
- [Companies with in-house R&D in Spain](https://www.tamtam.ai/l/r-and-d-companies-spain) (1,067)
- [Wellness and Fitness Services companies in Spain](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-spain) (879)
- [Healthcare providers in Spain](https://www.tamtam.ai/l/healthcare-providers-spain) (711)
- [Companies with a mobile app in Spain](https://www.tamtam.ai/l/companies-with-mobile-app-spain) (561)
- [Hotel and hospitality groups in Spain](https://www.tamtam.ai/l/hospitality-groups-spain) (539)
- [Family-owned companies in Spain](https://www.tamtam.ai/l/family-owned-companies-spain) (531)
- [Software Development companies in Spain](https://www.tamtam.ai/l/software-development-companies-spain) (530)
- [Professional services firms in Spain](https://www.tamtam.ai/l/professional-services-firms-spain) (522)
- [Critical infrastructure operators in Spain](https://www.tamtam.ai/l/critical-infrastructure-operators-spain) (517)
- [IT services companies in Spain](https://www.tamtam.ai/l/it-services-companies-spain) (484)
- [Financial services firms in Spain](https://www.tamtam.ai/l/financial-services-firms-spain) (482)
- [Food and Beverage Services companies in Spain](https://www.tamtam.ai/l/food-and-beverage-services-companies-spain) (462)
- [SaaS companies in Spain](https://www.tamtam.ai/l/saas-companies-spain) (445)
- [Retail Apparel and Fashion companies in Spain](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-spain) (439)
- [IT Services and IT Consulting companies in Spain](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-spain) (437)
- [Hospitality companies in Spain](https://www.tamtam.ai/l/hospitality-companies-spain) (435)
- [Consulting firms in Spain](https://www.tamtam.ai/l/consulting-firms-spain) (420)
- [E-commerce companies in Spain](https://www.tamtam.ai/l/ecommerce-companies-spain) (416)
- [Food and beverage companies in Spain](https://www.tamtam.ai/l/food-and-beverage-companies-spain) (416)
- [Hardware manufacturers in Spain](https://www.tamtam.ai/l/hardware-companies-spain) (415)

## The same list elsewhere in Spain

- [Cybersecurity companies in Community of Madrid](https://www.tamtam.ai/l/cybersecurity-companies-community-of-madrid) (39)
- [Cybersecurity companies in Madrid](https://www.tamtam.ai/l/cybersecurity-companies-madrid) (31)

## The same list elsewhere

- [Cybersecurity companies in the world](https://www.tamtam.ai/l/cybersecurity-companies-in-the-world) (3,776)
- [Cybersecurity companies in Europe](https://www.tamtam.ai/l/cybersecurity-companies-in-europe) (2,197)

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Source: https://www.tamtam.ai/l/cybersecurity-companies-spain