The cybersecurity companies in Flanders are primarily IT services and software development firms. The largest among them include Cegeka, an IT solutions provider, Intigriti, which focuses on vulnerability finding and fixing, and Telenet Business, offering digital solutions including security. Other notable companies are Lansweeper, providing an IT asset management platform, and Guardsquare, a mobile application security solutions provider.
Most of these companies are mid-sized to large, with Cegeka having over 5000 employees. There is a strong presence of companies founded in the early 2000s, such as Telenet Business (2002) and Lansweeper (2004), indicating a period of growth in the region's IT and cybersecurity sectors. The companies are spread across various cities in Flanders, including Hasselt, Antwerp, Mechelen, and Leuven.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Cegekacegeka.com
A family-owned IT solutions provider focused on creating personalized customer experiences, aiming to become the leading European orchestrator of digital business platforms |
5,167 | |||
| 2 |
Intigritiintigriti.com
Empowering large organizations to find and fix vulnerabilities using a platform and global security researchers, preventing costly breaches through various security solutions. |
782 | |||
| 3 |
Telenet Businesswww2.telenet.be
Telenet Business provides Belgian entrepreneurs with digital solutions including connectivity, network, security, and IT services, ensuring a smooth digital flow for businesses of all sizes |
656 | |||
| 4 |
AXI IT Servicesaxi.be
Innovative software and IT solutions provider for various industries, helping clients succeed and achieve their vision with offices in Netherlands and Belgium |
497 | |||
| 5 |
Lansweeperlansweeper.com
Provides a centralized platform for managing IT assets, enhancing visibility, automating tasks, and supporting cybersecurity through comprehensive asset discovery and management. |
422 | |||
| 6 |
Trustteam Belgi毛 / Belgiquetrustteam.eu
Leading provider of IT managed services offering cloud, infrastructure, networking, security, software, VoIP, and support solutions with multiple certified data centers |
275 | |||
| 7 |
Aikido Securityaikido.dev
Automated platform for secure code, cloud, and runtime environments with AI-driven vulnerability detection and remediation for engineering teams. |
249 | |||
| 8 |
VanRoeyvanroey.be
IT-services provider specializing in digitalization through automation, software, services, and Hybrid-IT infrastructure, prioritizing security and data protection for companies' digital transformation |
228 | |||
| 9 |
ConXioNconxion.be
A Flemish ICT service provider offering hardware, infrastructure, security, and software solutions to SMEs, Midrange, and Enterprise segments with strong partnerships and innovative Experience Center |
195 | |||
| 10 |
Guardsquareguardsquare.com
A leading provider of mobile application security solutions, offering a comprehensive approach to protecting apps through code hardening and real-time threat visibility |
180 | |||
| 11 |
Cegeka Belgium (CTG)cegeka.com
CTG accelerates digital transformation by providing innovative solutions and services to achieve business and IT outcomes with agility and confidence |
117 | |||
| 12 | 91 | ||||
| 13 |
Phishedphished.io
Offers AI-powered cybersecurity training, personalized phishing simulations, and threat intelligence to reduce human error and improve organizational security posture. |
81 | |||
| 14 |
Toreontoreon.com
Independent consultants providing information security advice to help organizations safely leverage technology, make informed decisions, and achieve digital goals with confidence and trust. |
69 | |||
| 15 |
SecWisesecwise.be
Provide expert services, guidance in security, and compliance for cloud and mobile-first environments, developing mature cybersecurity strategies and architectures. |
39 | |||
| 16 |
Infinigate Belgiuminfinigate.com
Value-add distributor of leading-edge cybersecurity solutions across EMEA, with dedicated technical experts providing secure network and cloud protection for SMBs and enterprises |
39 | |||
| 17 |
axl & traxaxl-trax.com
Specializes in providing security solutions for well-managed organizations utilizing SAP systems, offering expertise tailored to enhance protection and minimize vulnerabilities |
37 | |||
| 18 | 35 | ||||
| 19 |
Interligointerligo.be
This company specializes in personalized network solutions to help businesses achieve their goals within budget, focusing on security, user access, collaboration, and more |
34 | |||
| 20 |
Sertalinksertalink.com
Specialized in cutting-edge security solutions including identity and access management, data governance, data loss prevention, and remote access session monitoring for IT infrastructures |
32 | |||
| 21 |
The Collective Consultingthecollective.eu
A highly-skilled Microsoft Gold Partner specializing in security, compliance, endpoint management, messaging, Microsoft Teams voice, and meetings Employs certified professionals for quality services |
32 | |||
| 22 |
Exclusive Networks - Belgiumlinktr.ee
Global cybersecurity specialist providing partners and customers unique service portfolios, technical know-how, managed security, and training through a curated leading vendor network worldwide. |
31 | |||
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| 23 |
Resilient Securityresilientsecurity.be
Specializing in cyber security, we work to ensure every business is protected against threats and risks in the digital landscape |
24 | |||
| 24 |
Nomios Belgiumnomios.be
This company develops secure and connected digital solutions and services, managing infrastructure and providing innovative security and network solutions for businesses |
22 | |||
| 25 |
AXS Guardaxsguard.com
Belgian Cybersecurity specialist providing secure network connections, protection against cyber threats, VPN services, compliance monitoring, and managed security solutions for enterprises |
22 | |||
| 26 |
SHIELD vzwshield-vzw.be
Shield offers proactive IT expertise in cybersecurity, collaborating with healthcare and educational institutions to develop solutions against cyberthreats |
21 | |||
| 27 | 21 | ||||
| 28 |
ActWiseactwise.eu
Specializing in identity security, ActWise helps companies protect against cyber threats with a privilege-centric approach, defending what matters most |
21 | |||
| 29 |
Siltasilta-ict.be
Specializing in designing, implementing, and managing advanced network infrastructures, focusing on custom solutions that seamlessly integrate with business objectives Also offering scalable cloud solutions |
20 | |||
| 30 |
Hybrid Corehybridcore.eu
Hybrid Core specializes in guiding organizations through challenging and risky operating environments to ensure success |
18 | |||
| 31 |
Barbariansbarbarians.io
Provides cloud-first, managed SIEM system with integrated AI for enterprise security incident monitoring, alerting & reporting, deployed on AWS, Azure, or Google Cloud |
16 | |||
| 32 |
Crimson7crimson7.io
Providing advanced cybersecurity solutions through research, focusing on attack intelligence and security operations to combat evolving threats effectively. |
13 | |||
| 33 |
Secure IT, a division of INTERITsecure-it.be
Specialized in IT security, providing top-notch solutions for secure IT infrastructures Guarantees maximum security and 24/7 monitoring, constantly staying updated in the IT security market |
12 | |||
| 34 |
Splyntersplynter.be
Improves security posture through vendor-independent risk-based approaches, security architecture, technical expertise, and specialized training to help organizations understand and combat cyber adversaries. |
12 | |||
| 35 |
Uptime Securitybowtiesecurity.com
The company provides comprehensive cybersecurity solutions, allowing businesses to focus on their core operations by managing cybersecurity challenges efficiently |
9 | |||
| 36 | 8 | ||||
| 37 |
Outpost24 Benelux (ex-Sweepatic)outpost24.com
A European leader in External Attack Surface Management, automating mapping, monitoring, and managing internet-connected assets and risks for cyber resilience |
8 | |||
| 38 |
ACEN MDR (Formerly Nynox)nynox.eu
A cybersecurity company offering SOC as a Service, MDR, SIEM, CSIRT, digital forensics, EDR, XDR, threat intelligence, vulnerability management, and more |
6 | |||
| 39 |
Safe-Connectsafe-connect.com
Delivers IT architecture, cybersecurity, and managed services across Europe through proactive ICT strategy development, data monitoring, and hybrid cloud infrastructure management. |
5 | |||
| 40 |
wizQIT BVwizqit.com
Specializing in highly secured networks, we have strategic partnerships with top technology companies like Fortinet, SentinelOne, Juniper, HP, and others |
3 | |||
| 41 |
BOSSIT - Ethical Hackingbossit.be
Cybersecurity company specializing in ethical hacking and penetration testing of IT systems, networks, and web applications |
3 | |||
| 42 |
Icteryusicteryus.com
Global enterprise protection from cyber security threats through reliable and transparent services available 24/7 |
3 | |||
| 43 |
Soteria - Cybersecuritysoteria.be
A cybersecurity partner specializing in IT & OT, offering tailored solutions, services, and consultancy to protect businesses from cybercrime and keep operations secure |
3 | |||
| 44 |
Staunchportfolio.staunch.be
An IT company specializing in Enterprise Information Security solutions, offering services for cybersecurity awareness, risk assessment, compliance, and critical infrastructure security enhancement |
3 | |||
| 45 |
CyberTalent
CyberTalent provides tailored cybersecurity solutions and staffing to protect businesses against evolving threats, offering audits, consultancy, and phishing campaigns |
3 | |||
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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 Flanders
- The largest companies in Flanders 4,222
- Multinational companies in Flanders 1,023
- Manufacturers in Flanders 415
- Retail chains in Flanders 370
- IT services companies in Flanders 367
- IT Services and IT Consulting companies in Flanders 356
- Companies with in-house R&D in Flanders 352
- Transportation, Logistics, Supply Chain and Storage companies in Flanders 313
- Family-owned companies in Flanders 310
- Software Development companies in Flanders 287
- SaaS companies in Flanders 265
- Professional services firms in Flanders 263
- Distributors and wholesalers in Flanders 246
- Hardware manufacturers in Flanders 213
- Truck Transportation companies in Flanders 205
- Logistics companies in Flanders 202
- Critical infrastructure operators in Flanders 183
- Retail companies in Flanders 182
- Food and Beverage Manufacturing companies in Flanders 175
- Consulting firms in Flanders 172
- E-commerce companies in Flanders 145
- Advertising Services companies in Flanders 137
- Food and beverage companies in Flanders 131
- Financial services firms in Flanders 128