Paradox InfoSec
Cybersecurity firm based in Slovakia; specializes in penetration testing, vulnerability assessments, and security consulting; explicitly offers manual attack simulations to identify security flaws, including injection vulnerabilities; registered in Slovakia with IČO 54654475 and VAT number.
Revolware
IT services and consulting company based in Slovakia; specializes in software, web, and AI development with a focus on end-user experience; offers penetration testing and security testing services, including stress tests and attack simulations; 4 employees, founded 2015.
Axians Slovakia
IT services company based in Bratislava, Slovakia; provides ICT solutions, cybersecurity including penetration testing, and certified Zabbix training; headquarters and registered address at Plátennícka 19013/2, 821 09 Bratislava; established presence in Slovak market.
Zenotec
Slovakia-based cybersecurity company headquartered in Bratislava; provides penetration testing services including infrastructure pentesting, with formal registration details (Company registration: Bratislava III, section: Sro, file no.: 100185/B; VAT No: SK2024130889).
Rhombus
Cybersecurity company headquartered in Bratislava, Slovakia, specializing in trusted security services; offers penetration testing, phishing simulations, and security process solutions with quick deployment and cost-effective options for organizations with limited resources.
TopCertifier
Slovakian-based cybersecurity consulting firm specializing in ISO, CE Mark, VAPT, and HACCP certifications; offers penetration testing services including network penetration testing in Slovakia; located at Apollo Business Centre II, Bratislava, with contact options via phone and email.
EPAM Systems
EPAM Systems is a Slovakia-registered company specializing in software engineering, digital platform development, and digital product design; it offers active penetration testing services, including application, API, cloud, network, and device security testing, as well as PTaaS.
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ProCyber Consulting
Cybersecurity consulting firm based in Bratislava, Slovakia; specializes in penetration testing, vulnerability scanning, and strategic security solutions; employs senior cybersecurity professionals and offers independent security architecture assessments.
PwC Slovakia
Slovak-based professional services firm, part of the global PwC network; offers cybersecurity services including penetration testing, security testing, and ethical hacking, with regional offices in Bratislava and a registered address at Karadžičova 2, 815 32 Bratislava.
GDPR Data Protection Slovakia
Data protection company based in Slovakia; provides comprehensive GDPR compliance solutions and penetration testing services, including internal and external security assessments, with a focus on identifying vulnerabilities through simulated attacks.
Shield Tech
Slovak cybersecurity firm specializing in IT/OT security and penetration testing; offers simulated cyberattack assessments to evaluate security; based in Slovakia with a Slovak registration and domain.
PwC
PwC is a global professional services firm with 120,836 employees and $55.4B annual revenue; based in Bratislava, Slovakia, with the main office at Karadžicova 2. The firm offers assurance, tax, advisory, and consulting services, and provides penetration testing including red teaming, web, infrastructure, mobile, OT/ICS, and IoT testing, demonstrating strong cybersecurity capabilities.
Gamo a.s.
Gamo a.s. is a Slovakia-based IT company headquartered in Banská Bystrica, specializing in cloud services and cybersecurity. The firm explicitly provides penetration testing (pentest) services, employing ethical hacking techniques to evaluate security resilience.
GlobalLogic
GlobalLogic is a Slovakia-based digital product engineering company specializing in software development, product strategy, and experience design; it explicitly offers penetration testing and offensive security services, with dedicated roles and references to pentest activities on its site.
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Ims, A.s.
Slovakian IT services company specializing in security solutions; offers penetration testing services explicitly listed under 'Software security' on their website; headquartered in Žilina, Slovakia.
Carbonsec Ltd.
Cybersecurity consultancy specializing in penetration testing, red teaming, and security advisory; 7 employees; Founded 2017; Ljubljana, Slovenia; Offers services including password security, ransomware readiness, secure static code review, and ICS security.
GO-LIX d.o.o
Information security company based in Slovenia; provides penetration testing, system security inspections, incident response, and education; 5 employees with 40% YoY growth; founded 1990; headquartered in Šempeter pri Gorici, Slovenia.
CYBER-SEC
IT Services and IT Consulting company specializing in cybersecurity; offers penetration testing, ethical hacking, vulnerability assessment, incident response, and security audits; founded 2025; 2 employees; headquartered in Ljubljana, Slovenia.
ACROS Security
Cybersecurity company specializing in penetration testing, security research, and code review; 3 employees, founded 1998, headquartered in Maribor, Slovenia; known for application security and vulnerability assessment.
SECUREON
SECUREON is a Slovenian private computer and network security firm founded in 2016, with 7 employees. It provides information security services such as penetration testing, vulnerability assessments, and data protection, along with consulting, system design, and testing. The company specializes in helping clients achieve compliance with standards and regulations, with a focus on holistic data security.
Smart Com d.o.o.
IT services and consulting company based in Slovenia; specializes in advanced ICT solutions, security reviews, and penetration testing with CEH, LPT, ECSA certifications; 38 employees, $5M-$25M revenue, founded 1990, with over 60 security checks performed.
ASTEC
IT security service and consulting company specializing in penetration testing, information security, and risk assessments; offers external and internal security testing services; founded in 1991, with 17 employees; based in Ljubljana, Slovenia.
3fs
IT services and consulting firm specializing in digital product development, IoT, and cybersecurity; offers penetration testing and red teaming services; based in Kranj, Slovenia with 31 employees, $9.8M revenue, and 3% YoY growth.
SIQ Ljubljana
Slovenian Institute of Quality and Metrology (SIQ Ljubljana) is a private, independent organization providing product testing, certification, management systems assessment, and metrology services; with 131 employees and 9.6% annual growth, it offers penetration testing and cybersecurity solutions to ensure safety and quality in various sectors, based in Slovenia.
ANGELIS
ANGELIS is a Slovenia-based private IT & Services company founded in 2011, with 5 employees. It offers digital transformation solutions and cybersecurity services, including penetration testing with detailed methodologies for white-box, grey-box, and black-box testing. The company has 691 monthly website visits and active social media presence, focusing on business process optimization and secure digital growth.
SSRD
IT services and consulting company specializing in secure blockchain solutions, software development, and penetration testing; 5 employees with 54.5% YoY growth; based in Maribor, Slovenia; offers secure coding, code revision, training, and pentesting services.
OSI d.o.o.
Slovenian software development company specializing in information security, system integration, and electronic identity solutions; offers application security review, static and dynamic source code analysis, and penetration testing services; 8 employees, founded 2008, headquartered in Slovenia.
Andersen in Slovenia
Financial services company based in Ljubljana, Slovenia; provides transaction services, financial restructuring, insolvency, financial and accounting investigations, and cybersecurity including penetration testing and training; 4 employees; Website: https://www.si.andersen.com
NIL Ltd.
IT services and consulting firm specializing in data centers, network, cloud, and cybersecurity; 357 employees (+1.1% YoY growth); founded 1989; headquartered in Ljubljana, Slovenia; provides penetration testing and security assessment services, with a global web presence of 19,760 monthly visits and ranked #1,347,065 globally.
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3 Gen d.o.o.
Slovenian private computer and network security company specializing in penetration testing, vulnerability assessments, and security audits; 3 employees with 28.6% YoY growth, founded in 1996, headquartered in Slovenia. Recognized among top security providers in Slovenia, actively engaged in industry events and social media.
Skupina Infocenter
IT services and consulting company specializing in security solutions such as personal data protection, information security, and detective services; provides penetration testing services as confirmed by dedicated website content; based in Ljubljana, Slovenia with 3 employees; maintains a modest online presence with 1,125 monthly visits and a global rank of #12,724,579.
VitaliT Solutions
Slovenia-based IT services and consulting firm specializing in cybersecurity and penetration testing; active service provider with dedicated pentest offerings, founded in 2002, with 1 employee, headquartered in Ljubljana, Slovenia.
Next Sight
Next Sight is a Slovenia-based IT system and custom software development company specializing in penetration testing and security assessments; founded in 2024 with 2 employees, it offers comprehensive testing services including network, application, wireless, infrastructure, social engineering, and red teaming to enhance cybersecurity.
benchmarked
Slovenia-based cybersecurity firm specializing in penetration testing, compliance, and cyber resilience solutions; 1 employee with 33.3% growth; founded in 2024; connects CISOs and vendors through a curated platform for cybersecurity services.
CLICO SI
Cybersecurity company based in Slovenia; specializes in penetration testing (pentest) services including infrastructure and network application assessments with dedicated pen-testers; registered at Tržaška cesta 515, Brezovica pri Ljubljani, Slovenija.
Implex System Engineering D.o.o.
Slovenian IT company based in Domžale; provides penetration testing and security testing services; registered as a d.o.o.; headquarters at Ljubljanska cesta 88, 1230 Domžale, Slovenia.
ACROS Security
Slovenian cybersecurity firm specializing in penetration testing and vulnerability management; offers application penetration testing, lightweight micropatching, and security research; headquartered in Maribor, Slovenia, with 50+ employees and founded in 2010.
VULNEX
Cybersecurity company specializing in penetration testing, application security, and cyber intelligence; 2 employees, $547.6K revenue, founded 2012, Madrid, Spain; offers security assessments, offensive and defensive security products, and security training.
Redexploit, S.L.
Cybersecurity company specializing in Red Teaming, penetration testing, and hacking; based in Barcelona, Spain with 2 employees and experiencing 50% monthly growth. Provides security audits, continuous monitoring, vulnerability management, incident response, and social engineering services.
Zerod
Cybersecurity testing solutions company providing human-led pentesting augmented by technology; 9 employees with 50% YoY growth; founded 2022; headquartered in Barcelona, Spain; offers a platform for penetration testing, real-time reporting, and compliance support.
AptGetDefence
Cybersecurity company specializing in penetration testing, vulnerability assessments, and incident response; based in Spain with 4 employees, founded in 2017. Offers services such as penetration testing, data analysis, employee training, GDPR compliance, and backup solutions; active in cybersecurity incident response and malware mitigation.
SECRA SOLUTIONS
Cybersecurity and IT consulting firm specializing in penetration testing, offensive security, and security architecture; 4 employees, founded 2025, based in Mostoles, Spain; offers web, IoT/OT, wireless, and cloud pentesting services, with a focus on strategic security and GRC.
Tarlogic
Cybersecurity company specializing in cyber intelligence, penetration testing, and web security; 97 employees with 21.2% YoY growth; founded 2011; headquartered in Spain; recognized as Europe’s Fastest Growing Company by FT for three years; offers comprehensive penetration testing services including black-box, white-box, grey-box, internal, external, social engineering, and Wi-Fi testing.
DinoSec
Cybersecurity company specializing in penetration testing services, including multi-platform tests for web, wireless, mobile, and infrastructure; based in Madrid, Spain, founded in 2008, with 3 employees and a 33.3% YoY decline in growth.
Cybertik:
IT services and consulting company specializing in offensive security and penetration testing; offers AI-driven cyber warfare simulations and automated threat detection; 2 employees with 100% YoY growth; headquartered in Malaga, Spain.
Puffin Security
Cybersecurity company specializing in penetration testing, cybersecurity assessments, and red team services; 2 employees with -14.3% YoY growth; founded 2010; based in Madrid, Spain.
AllPentesting
Cybersecurity company specializing in penetration testing, hacking training, and managed security services; 4 employees based in Spain; operates in digital security, cybersecurity, and web development; listed among top Spanish cybersecurity firms.
jtsec Beyond IT Security
Cybersecurity company specializing in security certifications, ethical hacking, and penetration testing; 47 employees (+3.4% YoY growth), founded 2016, headquartered in Granada, Spain; provides services including Common Criteria, FIPS 140-2, LINCE, PCI-PTS, and security consulting.
Internet Security Auditors
Internet Security Auditors is a Spain-based private cybersecurity firm specializing in computer and network security, with 26 employees and $4.6M annual revenue. The company offers penetration testing, ethical hacking, source code review, and forensic services, and is recognized for expertise in standards like ISO27001 and PCI. Founded in 2001, it maintains a modest web presence and competes globally with a ranking of #3,532,682.
Asperis Security
Asperis Security is a Spain-based private cybersecurity firm founded in 2022, specializing in offensive security services such as penetration testing, web security monitoring, ethical hacking, and cybersecurity consulting; with 2 employees and a focus on protecting vital business data.
Aiuken Cybersecurity
Cybersecurity company specializing in managed security, security integration, and cloud services; 93 employees (+15.4% YoY growth); founded 2012; headquartered in Boadilla del Monte, Spain; offers penetration testing, threat detection, response, and marketplace solutions; operates in 7 countries.
Hispasec
Cybersecurity-focused IT services and consulting company based in Málaga, Spain; provides penetration testing, security audits, risk management, and training since 1998; 46 employees, EUR804.3K revenue, +4.5% YoY growth.
Secur0
Cybersecurity company specializing in penetration testing and vulnerability assessments; 9 employees with 400% YoY growth; headquartered in Madrid, Spain; offers pentest services and security consulting, emphasizing expertise in identifying security vulnerabilities.
Apolo Cybersecurity
IT services and consulting company specializing in cybersecurity; 19 employees; based in Spain; offers penetration testing, vulnerability analysis, SOC as a service, CISO as a service, compliance, and cybersecurity training; emphasizes AI-driven threat prevention and real-time security solutions.
SilentForce
SilentForce is a security and investigations firm specializing in offensive and defensive cybersecurity services; offers attack surface management and adversarial simulation (penetration testing) to identify and mitigate vulnerabilities; founded 2021, 5 employees, headquartered in Madrid, Spain.
Axelia Cybersecurity
IT services and consulting company specializing in cybersecurity solutions for small businesses; offers penetration testing, data security, and compliance services; founded in 2022 in Barcelona, Spain; 7 employees with 60% YoY growth; categories include cybersecurity, cloud security, ISO27001, and SME security.
Sidertia by Izertis
Sidertia by Izertis is a private cybersecurity firm based in Madrid, Spain, specializing in computer and network security with a focus on penetration testing; 69 employees, $15M-$25M revenue, founded in 2012. The company provides periodic IT infrastructure evaluations and remediation, with a global rank of 3,573,300 and 3,900 monthly website visits.
goikode
goikode is a cybersecurity-focused IT services and consulting company based in Bilbao, Spain; specializing in penetration testing, security training, compliance, and cloud security solutions, with 2 employees and 100% YoY growth.
DLTCode
Cybersecurity consulting firm specializing in penetration testing, digital transformation, and next-generation security solutions; 41 employees with 88.6% YoY growth; based in Spain; active in space security missions involving nanosatellites.
XRAY CyberSecurity
Cybersecurity firm specializing in penetration testing services such as network, application, and social engineering assessments; based in Valencia, Spain, with 6 employees, founded in 2013, and offering internationally certified testing solutions.
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Hack by Security
Cybersecurity and network security company based in Spain; specializes in penetration testing, auditing, and security training with 18 employees and 5.9% YoY growth. Founded in 2019, they focus on ethical hacking, security audits, and training services, leveraging over 20 years of team experience in cybersecurity and ethical hacking.
Hard2bit Cybersecurity
Cybersecurity company specializing in penetration testing, ethical hacking, and vulnerability assessment; 16 employees with 4.8% YoY growth, $2.4M annual revenue; based in Madrid, Spain, founded 2013 • Focuses on security audits, compliance, forensic investigations, and IT outsourcing; core services include ethical hacking and vulnerability assessments.
Qintegra Consulting
Qintegra Consulting is a Spain-based cybersecurity and IT services firm founded in 2004, with 17 employees and $101.4K annual revenue. It specializes in penetration testing, network auditing, infrastructure analysis, incident response, and cybersecurity training, serving a multinational client base with a focus on security and compliance.
ISECOM
ISECOM is a private research services company specializing in cybersecurity, penetration testing, and security methodologies; with 10 employees, $4.3M revenue, founded in 2001 in Barcelona, Spain, and known for developing the OSSTMM security testing methodology.
DELTA90
Cybersecurity company specializing in penetration testing and security services; 4 employees with 300% YoY growth; founded in 2017; headquartered in Madrid, Spain.
Cyber Struggle
Cyber Struggle is a private cybersecurity firm based in Bilbao, Spain, founded in 2019, with 6 employees and $646.8K in total funding. They specialize in interdisciplinary cybersecurity, emphasizing resilience, psychological and technical preparedness, and unconventional defense strategies. The company maintains a dedicated penetration testing unit, indicating they provide pentest services, and focuses on addressing future uncertain threats through innovative, asymmetric methods.
The Security Sentinel
Cybersecurity company specializing in penetration testing, security audits, and ethical hacking; 5 employees with 27.3% YoY growth; founded 2006; headquartered in Madrid, Spain; offers cybersecurity services including pentesting, hacking, red team, and security training.
Red4Sec Cybersecurity S.L.
Spain-based cybersecurity company specializing in penetration testing, ethical hacking, and security audits for blockchain and Web3 projects; 3 employees, founded 2016, headquartered in Madrid, with expertise in malware analysis and infrastructure security.
Andubay - Grow in Security
Andubay is a Spain-based cybersecurity firm with 3 employees, founded in 2015, specializing in penetration testing, vulnerability analysis, reverse engineering, incident response, and social engineering. It offers dedicated hacking and intrusion testing services, emphasizing core penetration testing capabilities, and maintains a web presence with 637 monthly visits.
Taquion Cybersecurity
IT services and consulting company specializing in cybersecurity; offers penetration testing services like SecureScan 360 that simulate attacks from all perspectives; based in Spain with 2 employees, founded in 2016, experiencing 100% monthly workforce growth.
Intelequia
Intelequia is a Madrid-based cybersecurity and digital transformation firm that specializes in penetration testing, including advanced red team simulations; it helps organizations identify vulnerabilities and optimize security through comprehensive audits and real attack simulations.
The Hacker Way
Spain-based cybersecurity firm headquartered in Madrid; specializes in penetration testing and offensive security services with a focus on vulnerability discovery. Offers cybersecurity training and products, emphasizing offensive approaches and AI integration.
RCC Advisory
RCC Advisory is a Spain-based private cybersecurity company founded in 2024, with 2 employees; specializes in penetration testing, ethical hacking, compliance, and security hardening services, originating from military cybersecurity expertise.
Bcnsoluciona
Cybersecurity company based in Barcelona, Spain, specializing in ethical hacking, penetration testing, security audits, and compliance consulting; offers CISO as a service and emphasizes protecting businesses from cyberattacks.
DarkData
Cybersecurity company based in Madrid, Spain, specializing in penetration testing and advanced cybersecurity solutions; offers offensive security assessments and rapid threat response capabilities, emphasizing intelligence-driven defense.
TSSCiberseguridad
Cybersecurity company based in Madrid, Spain, specializing in penetration testing, ethical hacking, and security audits; offers services including web, network, mobile, and industrial device testing, as well as Red Team exercises.
Secure&it
Cybersecurity firm based in Madrid, Spain; provides penetration testing, ethical hacking, and Red Team offensive security services; listed offices in Las Rozas, Madrid, confirming Spain headquarters.
Ciberlogic
Cybersecurity firm headquartered in Spain with 2 employees; specializes in penetration testing services including simulated attack scenarios and cybersecurity audits, demonstrating a focus on proactive security testing.
Tecnek Ciberseguridad
Cybersecurity company headquartered in Madrid, Spain, offering penetration testing, vulnerability assessments, and security consulting; provides scalable cybersecurity solutions to protect corporate information.
Ackcent Cybersecurity
Cybersecurity firm based in Barcelona, Spain, specializing in 24/7 managed security services; offers penetration testing services, with explicit service pages, cybersecurity protocols referencing network penetration testing, and active pentest roles. Founded in Spain, with a focus on offensive security capabilities.
Ciso.es
Spain-based cybersecurity company specializing in penetration testing, cloud security, and mobile app security; offers offensive security services including Red Team operations; headquartered in Cartagena, Spain, with a focus on continuous threat mitigation and compliance with standards like ENS, NIS2, and ISO 27001:2022.
Applus+ Laboratories
Applus+ Laboratories is a Spain-based business consulting and services firm with 489 employees (+37.3% YoY growth) and $50M annual revenue; it provides product testing, certification, and cybersecurity evaluations, including penetration testing for risk management and security testing, with a global network of laboratories across Europe, Asia, and North America.
Jáquers | Ciberseguridad
Cybersecurity company based in Spain; founded in 2021; 1 employee. Offers cybersecurity audits, penetration testing, web audits, and training to help businesses identify vulnerabilities and strengthen security defenses.
JAYMON SECURITY S.L.
Spain-based IT services and cybersecurity consulting firm specializing in penetration testing, ethical hacking, and vulnerability assessments; 1 employee with -20% YoY growth; offers comprehensive security testing services including gray and white box audits, with 996 monthly website visits.
Open Data Security
Open Data Security is a Spain-based private technology and internet company specializing in infrastructure and information security; providing penetration testing, security monitoring, customized solutions, and training. With 4 employees and founded in 2016, they focus on enhancing security processes and reducing costs, positioning as a market leader in information security services.
Planciber
Cybersecurity firm based in Spain; offers penetration testing, red team, and zero-trust architecture services; emphasizes security by design and proactive protection solutions.
ALMC Security
Spanish cybersecurity company specializing in IT solutions and penetration testing services; offers security audits and pentesting; based in Lleida, Spain; operates as Sociedad Limitada (SL).
Cyber Attack - CBA
Spain-based cybersecurity firm specializing in penetration testing services; offers attack simulation to assess security resilience; headquartered in Roquetas de Mar, Andalusia, Spain; uses a Spanish domain (.es).
Internet Security Auditors
Cybersecurity firm based in Spain; specializes in penetration testing, web application testing, and network security assessments; headquartered in Barcelona with offices in Madrid.
Enthec
Enthec is a Spain-based IT services and cybersecurity company founded in 2019, with 17 employees and $1M-$5M in revenue; it specializes in cyber surveillance, intelligence, and risk assessment, and offers penetration testing services through red team exercises and its proprietary Kartos platform. It has received $1M in seed funding and focuses on advanced threat intelligence and attack simulation.
Internet Security Auditors
Spain-based security firm specializing in penetration testing, web application testing, and network security; offices in Barcelona and Madrid; incorporated under Spanish law; active since at least 2013.
Telefónica
Telefónica is a multinational telecommunications company headquartered in Madrid, Spain, with 25,836 employees and $40.9 billion in annual revenue; they provide telecommunications services, infrastructure, and digital solutions. The company also offers penetration testing and cybersecurity services, including Red Teaming and ethical hacking, as part of their security portfolio. Telefónica has a EUR 23.2 billion market cap and a 0.3% monthly workforce growth.
Qualoom Expertise Technology
Spanish cybersecurity and technology consulting firm specializing in cloud, infrastructure, DevSecOps, and offensive security; offers penetration testing and Red Team services; headquartered in Móstoles, Madrid, with ISO 27001 security certification.
Comercial Ulzama S.L.U
Spain-based cybersecurity consulting firm with 9 employees and 5.9% YoY growth; specializes in audits, intrusion testing, and security strategies to protect business assets. Provides penetration testing services, including attack simulations and security assessments, supported by their website and service offerings.
Pentesting Team
Spain-based cybersecurity firm specializing in penetration testing and security audits; provides manual pentests, vulnerability assessments, and simulation scenarios using OWASP, PTES, and MITRE ATT&CK frameworks.
ESED - Cyber Security & IT Solutions
Cybersecurity company based in Spain; 11 employees; founded 2010; specializes in cybersecurity, IT support, SaaS, and training for SMEs; offers penetration testing, ethical hacking, and attack simulations; active in cloud computing and virtualization.
Sofistic
Cybersecurity company based in Spain; provides penetration testing and security audit services since 2009; headquartered in Castellón, Spain.
Secureon
Spain-based cybersecurity consulting firm specializing in penetration testing, IT, and cloud services; offers ethical hacking, network, web app testing, and social engineering; headquartered in Lleida, Spain.
Neotica Ciberseguridad
Spain-based cybersecurity firm with offices in Barcelona, Madrid, and Terrassa; specializes in penetration testing and ethical hacking services, offering vulnerability assessments and cybersecurity solutions.
Hacking GD
Spain-based cybersecurity firm specializing in penetration testing, web and network security, and cybersecurity training; offers pentest services and ethical hacking certifications, with over 14 years in IT.