# List of cybersecurity companies in Madrid

Tamtam tracks 31 cybersecurity companies headquartered in Madrid. This list ranks the 30 largest by number of employees on LinkedIn, led by Indra Group, NTT DATA Europe & Latam and Applus+. Their median headcount is 459. Half of them were founded in 1997 or later.

The companies listed here are primarily large firms in Madrid specializing in IT services and consulting, with a strong focus on cybersecurity. Key players include Indra Group, a multinational in defense and space alongside IT services; NTT DATA Europe & Latam, a global IT services provider; Applus+, a leader in testing, inspection, and certification; and Accenture España, a professional services company driving digital transformation.

A clear pattern among these companies is their deep engagement in cybersecurity, cloud technology, and digital transformation, indicating a concentrated expertise in these areas within the Madrid business landscape. Many also offer comprehensive IT consulting and managed services.

🇪🇸 Madrid · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [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 |  |
| 2 | [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 |  |
| 3 | [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 |  |
| 4 | [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 |  |
| 5 | [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 |  |
| 6 | [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 |  |
| 7 | [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 |  |
| 8 | [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 |
| 9 | [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 |
| 10 | [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 |
| 11 | [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 |
| 12 | [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 |
| 13 | [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 |
| 14 | [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 |  |
| 15 | [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 |
| 16 | [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 |
| 17 | [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 |
| 18 | [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 |
| 19 | [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 |
| 20 | [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 |  |
| 21 | [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 |
| 22 | [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 |
| 23 | [Securitypyme](https://www.tamtam.ai/c/securitypyme) (securitypyme.es)<br>Specializing in thorough technical audits focused on cybersecurity to protect businesses in today's digital landscape, ensuring compliance and proposing tailored security solutions | IT Services and IT Consulting | 🇪🇸 Madrid | 192 | 2021 |
| 24 | [Procesia](https://www.tamtam.ai/c/procesia) (procesia.com)<br>Procesia is an innovative group specializing in technology, training, and consulting for the modernization of Public Administration and Justice Administration through digital systems | IT Services and IT Consulting | 🇪🇸 Madrid | 181 | 2015 |
| 25 | [GlobalSuite Solutions](https://www.tamtam.ai/c/globalsuite-solutions) (globalsuitesolutions.com)<br>Providing solutions for risk management, security, compliance, and auditing through specialized consulting, software, and managed services to diverse sectors. | Software Development | 🇪🇸 Madrid | 135 | 2006 |
| 26 | [Lynx Tech](https://www.tamtam.ai/c/lynx-tech) (lynxtech.com)<br>An AI-driven software company focusing on detecting and predicting behavioral patterns, offering cutting-edge AI technologies for financial institutions and commercial enterprises globally | Software Development | 🇪🇸 Madrid | 126 | 2023 |
| 27 | [BOTECH](https://www.tamtam.ai/c/botech) (botech.info)<br>A company specializing in cybersecurity, artificial intelligence, big data, and fraud prevention for online banking and payment systems, offering cutting-edge solutions globally | Security and Investigations | 🇪🇸 Madrid | 109 | 2013 |
| 28 | [Áudea Seguridad de la Información](https://www.tamtam.ai/c/audea-seguridad-de-la-informacion) (audea.com)<br>Áudea is a technology consultancy specializing in information security and new technologies, offering services in legal, management, and technical areas | IT Services and IT Consulting | 🇪🇸 Madrid | 84 | 2002 |
| 29 | [Datos101](https://www.tamtam.ai/c/datos101) (datos101.com)<br>A data business continuity company offering services such as backups, disaster recovery plans, data storage, cybersecurity solutions, and compliance with data regulations | Software Development | 🇪🇸 Madrid | 21 | 2016 |
| 30 | [Gataca](https://www.tamtam.ai/c/gataca) (gataca.io)<br>Cybersecurity company developing self-sovereign identity technology for hyper-secure, passwordless access to digital services, offering decentralized identity solutions for individuals and companies | Software Development | 🇪🇸 Madrid | 14 | 2018 |

## 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 Madrid

- [The largest companies in Madrid](https://www.tamtam.ai/l/largest-companies-madrid) (2,650)
- [Multinational companies in Madrid](https://www.tamtam.ai/l/multinational-companies-madrid) (815)
- [Retail chains in Madrid](https://www.tamtam.ai/l/retail-chains-madrid) (259)
- [Financial services firms in Madrid](https://www.tamtam.ai/l/financial-services-firms-madrid) (231)
- [Professional services firms in Madrid](https://www.tamtam.ai/l/professional-services-firms-madrid) (227)
- [Wellness and Fitness Services companies in Madrid](https://www.tamtam.ai/l/wellness-and-fitness-services-companies-madrid) (202)
- [Critical infrastructure operators in Madrid](https://www.tamtam.ai/l/critical-infrastructure-operators-madrid) (169)
- [Healthcare providers in Madrid](https://www.tamtam.ai/l/healthcare-providers-madrid) (161)
- [Companies with in-house R&D in Madrid](https://www.tamtam.ai/l/r-and-d-companies-madrid) (158)
- [Companies with a mobile app in Madrid](https://www.tamtam.ai/l/companies-with-mobile-app-madrid) (158)
- [Consulting firms in Madrid](https://www.tamtam.ai/l/consulting-firms-madrid) (157)
- [IT services companies in Madrid](https://www.tamtam.ai/l/it-services-companies-madrid) (155)
- [Education providers in Madrid](https://www.tamtam.ai/l/education-companies-madrid) (141)
- [IT Services and IT Consulting companies in Madrid](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-madrid) (138)
- [Software Development companies in Madrid](https://www.tamtam.ai/l/software-development-companies-madrid) (129)
- [Financial Services companies in Madrid](https://www.tamtam.ai/l/financial-services-companies-madrid) (125)
- [Insurance companies in Madrid](https://www.tamtam.ai/l/insurance-companies-madrid) (122)
- [SaaS companies in Madrid](https://www.tamtam.ai/l/saas-companies-madrid) (113)
- [Hotel and hospitality groups in Madrid](https://www.tamtam.ai/l/hospitality-groups-madrid) (104)
- [Manufacturers in Madrid](https://www.tamtam.ai/l/manufacturers-madrid) (91)
- [Public sector organisations in Madrid](https://www.tamtam.ai/l/public-sector-organisations-madrid) (90)
- [Retail Apparel and Fashion companies in Madrid](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-madrid) (89)
- [Corporate groups and holding companies in Madrid](https://www.tamtam.ai/l/holding-companies-madrid) (89)
- [Business Consulting and Services companies in Madrid](https://www.tamtam.ai/l/business-consulting-and-services-companies-madrid) (80)

## The same list elsewhere in Spain

- [Cybersecurity companies in Spain](https://www.tamtam.ai/l/cybersecurity-companies-spain) (77)
- [Cybersecurity companies in Community of Madrid](https://www.tamtam.ai/l/cybersecurity-companies-community-of-madrid) (39)

## 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)

---

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