Penetration Testing Companies and Pen Test Firms 2026

🔒 Welcome to 0Day-cybersec - Your right-hand team in the battle of protecting your company database and assets in this digitalization era! 🔒 Are you thinking about strengthening your digital defenses? and you are wondering "where to start and shat should you do?>> Don't you worry, We're that team of cybersecurity experts you can speak to anytime to have a deep understanding of your cyber-landscape. At 0Day-cybersec, we're not just safeguarding your data; we're safeguarding your company's profits and eliminating potential loses caused by cyber-attacks. we support small to medium-sized businesses with comprehensive cybersecurity solutions 🌐 Our services include: 🔍 Expert Consultation 🛡️ Penetration Testing 📊 Comprehensive Auditing 💼 GRC (Governance, Risk, Compliance) 🎣 Phishing Simulation 🧠 Cyber Awareness Training 💻 Operational Security 🚀 Incident Response With a proven track record of securing organizations of various sizes, we're here to protect your business from the ever-evolving cyber threats. Stay tuned for expert insights and tips on keeping your business secure!" 💪💻🚀 Reach out today, and let's discuss how 0Day-cybersec can tailor a cybersecurity solution to fit your unique needs. Connect with us for peace of mind in the digital age. 📧📞🌐 #Cybersecurity #DigitalDefense #0Daycybersec

Trusted by many clients in Ireland and across the world including leading financial services institutions, government agencies and enterprises. 100% Security Labs delivers the best possible Cybersecurity experiences and risk mitigation to identify vulnerability and risk in your systems. We can protect your business against increasingly complex threats, help to meet local legislative and industry compliance, and operate successfully in the connected world.

We are a small security group focus on research and development. We love to use opensource/freesoftware tools.

300 Cybersecurity is a comprehensive, tools-based cybersecurity solution for small internal IT teams managing organizations of 50-250 users. We install, configure and support best-in-class security tools to create a holistic, 360-degree cyberdefense thereby giving our clients a major improvement in their cybersecurity posture in a matter of days.

We live, eat and breathe security. 403 Labs is a full-service information security and compliance consulting firm. 403 Labs specializes in performing compliance audits, computer security assessments, penetration tests and computer forensic investigations. 403 Labs has the privilege of working with leading financial institutions, payment card processors and merchants from around the world. The 403 Labs team has extensive knowledge and experience in cross-industry verticals, including the payment card, financial, restaurant, hospitality, health care and educational sectors. 403 Labs is an Approved Scanning Vendor (ASV), a Qualified Security Assessor (QSA), a Payment Application Qualified Security Assessor (PA-QSA), a QSA and PA-QSA for Point-to-Point Encryption (QSA (P2PE) and PA-QSA (P2PE)) and a PCI Forensic Investigator (PFI) certified to perform the requirements of the Payment Card Industry Data Security Standard (PCI DSS) and the Payment Application Data Security Standard (PA-DSS).

4ET Cybersecurity offers a host of cybersecurity services to businesses, organizations, and individuals to help them uncover hidden security vulnerabilities in their IT assets, understand the root causes of vulnerabilities, and adopt simple and cost effective measures to mitigate against cyber threats and have a secure IT environment.

4U Security merupakan tempat yang secara khusus didesain untuk memandu langkah - langkahmu dalam menjelajahi dunia seru keamanan siber mulai dari Bug Bounty, Capture The Flag (CTF), dan dunia Professional! Kursus-kursus unggulan kami tidak hanya memberikan pemahaman mendalam tentang konsep dan teknologi terkini di bidang ini, tetapi juga membekali dirimu dengan pengetahuan dan keterampilan yang sangat diperlukan untuk mengatasi tantangan keamanan digital di era modern.

56Bit is a Malta-based cloud technology company founded in 2019. It specializes in providing reliable and scalable cloud solutions to technology-driven businesses across Europe. With a team of under 50 employees, 56Bit positions itself as a leading provider in the cloud solutions space, focusing on innovation and expertise. The company offers a range of services, including cloud architecture design and consultancy, cloud implementations using Infrastructure as Code (IaC), cloud migration, and managed services with 24/7 support. They also provide DevSecOps strategy, toolchain implementation, training, and staff augmentation to enhance client teams with cloud expertise. 56Bit serves a diverse portfolio of clients, including notable companies like Sportradar, APS Bank, and Eurosport. Their mission is to deliver robust, secure, and efficient cloud platforms tailored to meet complex business needs, ensuring stability and future-proof infrastructure.

7ASecurity is a cybersecurity company based in the European Union, founded in 2011 by Abraham Aranguren. The company specializes in penetration testing, code audits, and comprehensive security assessments, with a strong emphasis on GDPR compliance and data protection. Their skilled team of certified security professionals delivers actionable penetration test reports and has collaborated with a diverse range of clients, including major corporations like Google, Microsoft, and Facebook, as well as NGOs and open source projects. The services offered by 7ASecurity include thorough security testing and code reviews to identify vulnerabilities, specialized cloud security assessments, and a commitment to maintaining high security and privacy standards. They actively pursue SOC 2 and ISO 27001 certifications and utilize advanced encryption methods to protect data. With a proven track record and endorsements from organizations like the Linux Foundation, 7ASecurity is recognized for its expertise in addressing complex security challenges across various environments.

Our philosophy is refreshingly simple: You encounter a challenge, and we provide the solution. Navigating the ever-evolving, fast-paced tech landscape can be quite daunting, and we get that. At 7th Layer Tech, we're here to alleviate your worries and usher in a hassle-free partnership that not only addresses your current tech concerns but also ensures a worry-free future.

9elements is a German software development agency founded in 1999, with headquarters in Bochum and an additional location in Berlin. The company specializes in creating custom digital products and services, integrating code, design, and strategy to deliver user-centric solutions. Their core services include custom software development for web and mobile platforms, mobile app development for iOS and Android, web development using modern frameworks, and UX/UI design to enhance user engagement. 9elements serves a diverse clientele, including startups and established organizations like OECD, Amazon, Google, and Microsoft. They emphasize a strong partnership approach, collaborating closely with clients from the initial idea to product launch. With a team of about 40 skilled developers, designers, and product managers, 9elements maintains a culture of technical excellence and continuous learning. They are also recognized for their contributions to open-source firmware development, particularly for Arm architectures, focusing on scalable and secure solutions. Overall, 9elements is committed to delivering innovative digital products while ensuring alignment with business goals and user needs.

ABP Cyber is a leading cybersecurity service provider based in Singapore, established in 2013. The company focuses on protecting critical infrastructures across Southeast Asia and serves various sectors, including financial institutions, utilities, telecommunications, healthcare, education, transportation, manufacturing, and government. ABP Cyber offers a wide range of end-to-end cybersecurity services. These include consultancy and advisory, architecture design and integration of security solutions, managed security services for threat detection and response, security operations and monitoring, and incident response. Their team of cybersecurity experts is equipped with extensive knowledge of technology and regulatory requirements, allowing them to create tailored solutions for their clients. As part of the ABP Group, ABP Cyber is recognized as a trusted partner by numerous enterprises and public sector organizations in the region. The company is dedicated to delivering comprehensive cybersecurity solutions that support clients throughout their cybersecurity lifecycle.

ACG Cybersecurity is a French company specializing in cybersecurity audit, consulting, and governance services. Based in the Cyber Campus at La Défense in Paris, it plays an active role in the French cybersecurity ecosystem, focusing on innovation and collaboration within the sector. The company is known for its expertise in designing, implementing, and securing information systems in line with international standards such as ISO 2700x, NIST, and GDPR. The services offered by ACG Cybersecurity include information security management, risk management strategy development, IoT security, security awareness training, and Security Operations Center (SOC) services. They also provide cybersecurity diagnostics, audits, and compliance audits for various regulatory frameworks. Additionally, ACG Cybersecurity operates the ACG Cyber Academy, which offers a range of training courses and programs to address the talent shortage in cybersecurity. With a strong reputation for quality and reliability, ACG Cybersecurity serves organizations in critical infrastructure and e-government sectors, continuously enhancing resilience against evolving cyber threats through research and development initiatives.

AOX is a German technology consulting company and software house that specializes in embedded software and high-performance computing for the automotive sector. Founded in 2018 and headquartered in Villingen-Schwenningen, Germany, AOX has additional offices in Karlsruhe, Rosenheim, and Wetzlar. The company is known for designing and developing system architectures and software used in vehicles, helping car manufacturers and suppliers transition to integrated, scalable software architectures. AOX's expertise includes embedded software engineering, real-time operating systems, and multi-OS domain controllers. Their services encompass consulting on organizational transformation, modern vehicle architectures, and automotive network software. AOX supports clients throughout the entire product lifecycle, from concept and architecture design to maintenance, facilitating the development of software-defined vehicles. As part of Accenture's Industry X engineering team, AOX enhances its global reach and capabilities, extending its expertise to other sectors like medical technology. This integration strengthens Accenture's position in the automotive software market, combining AOX's software architecture knowledge with Accenture's extensive service portfolio.

ASK Pentest Sdn. Bhd. was founded by a group of IT Security Specialist with professional experience in the Information Security Consultancy Services working for project in Government Sectors, Financial Industries, Educations and Enterprise.

AUSEC - An Information Security company specializing in security assessments, risk management and audit compliance. Provides end to end Information Security Solutions for understanding and countering the risks that arise out of the use of technology in an organization's business process. Services include Penetration Testing, Vulnerability Assessment, Web Application Testing, Security Audit, PCI DSS Guidance, Network Security, Incident Response, BCP / DR and other security solutions. Also offer tailor made "indepth & industry oriented" security training, workshops & internships for both students & corporates.

AWARE7 GmbH is a cybersecurity company based in Gelsenkirchen, Germany, founded in 2018. The company focuses on enhancing IT security for businesses, authorities, and individuals through a range of technologies and services. AWARE7 is ISO/IEC 27001 certified, demonstrating its commitment to high standards in information security management. The company offers offensive security services, including penetration tests to identify vulnerabilities in IT systems. They provide information security consulting to help organizations develop and improve their security management systems, particularly in line with ISO 27001 and regulatory requirements. AWARE7 also emphasizes the importance of human factors in cybersecurity through awareness training, live hacking shows, and phishing simulations that educate employees and the public on recognizing cyber threats. Additionally, AWARE7 engages in research and maintains strong ties to academia, contributing to the advancement of cybersecurity knowledge. AWARE7 serves a diverse clientele, including market leaders, small and medium-sized enterprises, and public authorities across Germany and Europe, ensuring they meet technical and regulatory challenges in cybersecurity.

Aaron Cybersecurity Services engages in vulnerability testing with HackerOne and other performs security research-related activities.

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Aberdeen Cyber Security is a managed service provider and integrated cyber security company located in Aberdeen, Scotland. They offer a wide range of IT and cyber security services tailored to meet the needs of local businesses. Their focus is on providing robust and scalable solutions that ensure comprehensive protection across IT infrastructures. The company provides various services, including ongoing IT support, cloud management, real-time threat prevention, and assistance with Cyber Essentials Certification. They specialize in fully managed IT and cyber security services, as well as vulnerability assessments to identify and address security weaknesses. Aberdeen Cyber Security aims to help businesses understand, implement, secure, and monitor their IT environments, allowing them to focus on their core operations while minimizing cyber risks.

ORGANISATION ET CENTRE SPECIALISÉ EN RECHERCHES ET D'EXPERIMENTATIONS DES SCIENCES ET COMPETENCES AVANCÉES, GEOSTRATEGIQUES EN SECURITE INFORMATIQUE – CYBERSECURITE - CYBERNETIQUE

AccessCyber is a company dedicated to cybersecurity education, training, and career development services. They offer a variety of customized workshops and instructional design tailored to different audiences, including high school and university students, corporate executives, and military leaders. Their services include curriculum development, personalized training programs, and career coaching through the AccessCyber Certified Career Coach (AC3) program, which helps individuals create tailored roadmaps for success in information security careers. Additionally, AccessCyber provides the AccessCyber Certified Instructor (ACI) credential for educators who want to teach cybersecurity effectively. They also engage experienced cybersecurity speakers for events and assist organizations in recruiting cybersecurity professionals. Their focus is solely on education and career opportunities in cybersecurity, making them a valuable resource for schools, universities, training providers, and individuals pursuing careers in this field.

Adivine InfoSec Pvt. Ltd. is a cybersecurity and information security company based in Noida, India. Founded in 2021, it specializes in identifying, monitoring, and mitigating security threats to protect digital assets. The company offers services that help organizations recognize and address potential and active cyber threats, ensuring effective management of security risks. With a team of 20 to 49 employees, Adivine InfoSec operates as a small to medium-sized enterprise, generating annual revenues estimated between 1 to 5 million USD. The company primarily serves businesses and organizations looking for cybersecurity solutions to enhance their information security and prevent cybercrime.

Adriano Cyber Consulting, LLC is a professional consulting services company focused on end-to-end Systems Engineering, Cybersecurity/Information Assurance (IA) and various compliance requirements. Adriano Cyber Consulting, LLC has a strong foundation in the core competencies and various security disciplines of Cybersecurity / Information Assurance (IA); NIST 800-171 compliance and Cybersecurity Maturity Model Certification (CMMC), experience in developing IA Research and Development (R&D) plans, beginning with advanced research to enable IA technologies, continuing with applied development of IA solutions to enable security architectures, and concluding with product systems integration and testing to measure effectiveness against customer mission need. Adriano Cyber Consulting, LLC employs individuals with the knowledge, understanding and experience with IA Policy and Doctrine, Security Management, Access Control, Physical Security, Business Continuity and Disaster Recovery; Security Architectures, Cryptography, Network Security, Applications and Systems Development, and Operations Security. Our employees hold numerous DoD 8570 compliant certifications, (e.g. Security+, CISSP, ISSEP, ISSMP, C|EH).