Penetration Testing Companies in Czech Republic 2025 (Reviewed)

Penetration Testing Companies Czech Republic

• Threat landscape: Czech businesses face rising cyberattacks amid strict GDPR and NÚKIB compliance demands.
• DeepStrike in CZ: Offers continuous pentesting PTaaS to shorten attacker windows and support compliance.
• Key competitors: Integra, Axians CZ, Captes, Sec4good, and other local providers.
• Coverage: Web, mobile, cloud, and network pentests using OWASP and NIST frameworks.
• Evaluator’s checklist:
  • Scope internal vs. external tests
  • Tester expertise OSCP, CREST
  • Relevant sector experience in finance, healthcare, government, etc.
• Why it matters: Regular or continuous pentesting dramatically reduces exploitability and supports regulatory alignment.

What Is Penetration Testing?

Penetration testing or pentesting is the practice of simulating cyber attacks on a system to find security holes before criminals can exploit them. As OWASP explains, it’s the art of testing a running application to find security vulnerabilities, with the tester acting like an attacker.

In the Czech Republic, pentesting is not just a buzzword NÚKIB the Czech cybersecurity agency explicitly encourages it as a preventive measure, describing pentests as a legal attempt to access tested systems resulting in a report of security gaps.

EU regulations add urgency for example, GDPR Article 32 requires organizations to regularly test their security often achieved through pentests , with failure risking fines up to €20 million or 4% of annual turnover. In short, Czech firms in 2025 need strong pentest partners to stay secure and compliant.

Why Pentesting Matters in 2025

The cyber landscape in 2025 is harsher than ever. Attacks are becoming more automated and AI driven. For example, IBM’s 2025 breach report found the average cost of a data breach at roughly $4.4 million, which despite some improvements still reflects massive financial risk.

Verizon’s 2025 Data Breach Investigations Report reveals a 34% jump in breaches due to known vulnerabilities. In short, attackers are fast exploiting new CVEs almost immediately and costly. Compounding this, regulations and client demands force companies to prove they’ve done their due diligence.

Alongside GDPR, many Czech firms follow ISO/IEC 27001, PCI DSS, or even HIPAA standards all of which call for routine vulnerability testing or pentesting as part of a sound security program.In practice, this means choosing a reputable pentesting company is critical.

The right firm can uncover the gaps your own scans miss. Top Czech pentest providers perform hands-on, expert analysis not just automated scans of your systems from internet facing web apps to internal networks, mobile apps, cloud infrastructure, and even social engineering tests.

They align with NIST SP 800 115 and OWASP guidelines, often offering both black box no prior info and white box full code access approaches. Regular pentests and increasingly continuous pentesting help ensure that by the time a real attacker strikes, your organization has already identified and patched the weak points.

As the chart above shows, continuous or rolling pentesting leaves far smaller exploit windows than an annual test.

Top Pentesting Companies in Czech Republic 2025

Here are some of the leading pentest firms serving Czech organizations headquartered in Czechia unless noted :

DeepStrike Manual PTaaS with Global Reach

• Services: Provides penetration testing and red team services worldwide, including Czechia. Coverage includes:
  • Web application pentesting
  • Mobile app security testing
  • Infrastructure & cloud security testing
  • Red team and social engineering engagements Services are delivered via a Continuous Penetration Testing platform, combining manual assessments, real time dashboards, and free retesting.
• Certifications & Compliance: Methodology mapped to OWASP, NIST, and ISO 27001. Reports are compliance ready for frameworks such as SOC 2, HIPAA, PCI DSS, and GDPR.
• Clients: Though headquartered in Delaware, USA, DeepStrike actively serves Czech clients remotely. Known for engagements with tech startups, fintechs, and enterprises, offering the same manual first testing globally.
• Pricing: Offers project based testing as well as subscription based continuous testing, with tiered plans depending on scope.
• Key Strength: Recognized for its manual, hacker style methodology that goes beyond scanners, plus continuous PTaaS model with real time dashboards and unlimited retesting. This makes DeepStrike a strong international alternative to local providers in Czechia.

DeepStrike is a US headquartered but globally active PTaaS provider, included here for its track record in Czechia. Its manual first, compliance ready, continuous testing model makes it an attractive option for Czech organizations seeking international level expertise with flexible, on demand delivery.

Integra Prague Based Full Scope Security Consultancy

• Services: Offers tailored penetration testing across:
  • Applications: web, mobile, desktop, and APIs
  • Cloud & network infrastructure: external and internal environments
  • Social engineering: phishing and vishing simulations Provides end to end coverage, from technical vulnerabilities to human factor risks.
• Certifications & Compliance: Methodologies aligned with OWASP, NIST, and ISO 27001. Reports support compliance for GDPR, PCI DSS, and SOC 2.
• Clients: Popular among Prague based businesses, Czech enterprises, and public sector organizations seeking locally delivered, full spectrum pentests.
• Pricing: Engagements are custom scoped and project based, reflecting the breadth of testing across applications, infrastructure, and social engineering.
• Key Strength: Known for its local presence and broad service range, Integra provides comprehensive coverage for Czech organizations needing both technical and social engineering assurance.

Integra is a Prague based consultancy delivering comprehensive pentesting and social engineering services. With its broad coverage and local expertise, it’s a trusted partner for Czech firms that require tailored, end to end offensive security testing.

Axians CZ Enterprise Focused Pentesting with Compliance Depth

• Services: Specializes in network infrastructure pentesting wired and wireless and web application security assessments. Experienced in testing large scale enterprise environments with complex infrastructures.
• Certifications & Compliance: Strong focus on compliance driven pentesting, including ISO/IEC 27001 and GDPR requirements. Reports tailored for regulated enterprises and public organizations.
• Clients: Works with Czech enterprises, government agencies, and energy sector operators, leveraging the global Axians brand for credibility.
• Pricing: Engagements are project based, typically scoped for large infrastructures and compliance heavy sectors.
• Key Strength: Known for its enterprise scale expertise and ability to deliver compliance focused pentests. Axians CZ is a strong choice for regulated industries and large organizations in need of rigorous, standards aligned testing.

Axians CZ, part of the global Axians brand, is a Prague based provider with expertise in network and web application pentesting for large enterprises. With a focus on energy, government, and regulated sectors, they bring compliance rigor and enterprise assurance to the Czech pentesting market.

Captes Boutique Pentesting with SDLC Integration

• Services: Provides penetration testing and code security services, including:
  • Web and mobile application pentests
  • Internal and external network infrastructure testing
  • Static code analysis
  • Also supports integration of testing into the software development lifecycle SDLC for ongoing security validation.
• Certifications & Compliance: Applies industry methodologies such as OWASP and NIST, with reporting tailored for GDPR and ISO 27001 compliance.
• Clients: Frequently engaged by public sector organizations and enterprises in the Czech Republic, valued for thorough assessments and strong local expertise.
• Pricing: Engagements are project based, with flexible options to align with development pipelines and public sector requirements.
• Key Strength: Known for its thoroughness and SDLC focus, Captes stands out as a boutique provider that combines classic pentesting with secure development support, making it ideal for organizations embedding security into DevOps.

Captes is a Pardubice based boutique infosec firm offering deep pentests and code reviews for Czech enterprises and public sector clients. With its focus on SDLC integration and thorough manual testing, Captes provides practical, developer friendly assurance.

Sec4good Research Driven Red Team & Pentesting

• Services: Provides comprehensive penetration testing and adversary simulations, including:
  • Network testing
  • Web and mobile application pentests
  • IoT device security testing
  • Social engineering
  • Full red team exercises mapped to MITRE ATT&CK
• Certifications & Compliance: Engagements follow industry standards e.g., OWASP, NIST and MITRE ATT&CK for realistic adversary emulation. Reporting supports GDPR, ISO 27001, and PCI DSS compliance.
• Clients: Works with enterprises, tech firms, and critical industries in the Czech Republic seeking advanced, research driven security testing.
• Pricing: Project based, often scoped for red team or multi surface pentests, reflecting the complexity of engagements.
• Key Strength: Known for its hands on, research driven methodology, Sec4good excels at finding unconventional vulnerabilities and running realistic adversary simulations tailored to client environments.

Sec4good is a Prague based pentest and red team provider that combines technical depth with adversary style realism. By following the MITRE ATT&CK framework and focusing on unconventional flaws, Sec4good delivers cutting edge offensive security for Czech enterprises.

BDO Czech Republic Enterprise Pentesting within Full Risk Audits

• Services: Offers penetration testing as part of broader cybersecurity and risk audits, including:
  • Infrastructure pentests
  • Web and mobile application testing
  • Static and dynamic code reviews
  • Integrated with enterprise risk assessments, compliance audits, and governance consulting.
• Certifications & Compliance: Engagements aligned with ISO 27001, NIST, and OWASP standards. As part of a global Big 4 network, BDO ensures audit ready documentation supporting GDPR, PCI DSS, SOC 2, and financial regulatory requirements.
• Clients: Primarily enterprise and multinational firms in Czechia, especially those requiring end to end risk management that combines cybersecurity, compliance, and pentesting under one provider.
• Pricing: Engagements are enterprise scale and project based, often part of broader audit or compliance programs rather than standalone pentests.
• Key Strength: BDO’s edge lies in its ability to bundle pentesting into holistic risk management frameworks. This makes it ideal for enterprises needing both technical testing and executive level compliance oversight.

BDO Czech Republic leverages its global Big 4 consulting network to deliver pentesting integrated with enterprise risk audits. Covering networks, applications, and code reviews, BDO is the go to for large organizations that need pentests embedded into full spectrum compliance and governance programs.

Aricoma Pentesting Across IT, ATMs & AI Systems

• Services: Provides broad spectrum penetration testing, covering:
  • Networks
  • Web, mobile, and desktop applications
  • Wireless/Wi Fi security
  • ATM and financial systems
  • Emerging technologies such as LLM/AI systems Known for deep protocol analysis and custom exploit development.
• Certifications & Compliance: Engagements aligned to OWASP, OSSTMM, and ISO 27001 frameworks. Reporting supports GDPR, PCI DSS, and financial compliance mandates.
• Clients: Works with banks, fintech firms, and enterprises in critical sectors, valued for their ability to test complex or niche systems.
• Pricing: Project based, with flexible scoping to cover traditional IT systems and specialized environments e.g., ATMs, AI/LLMs.
• Key Strength: Distinguished by its cutting edge offensive research e.g., SBOM Injection publications and ability to probe emerging threat areas like AI systems and advanced protocols, in addition to classic IT.

Aricoma is a Prague based infosec consultancy offering comprehensive pentesting from IT to financial systems and AI environments. Their research driven approach and creative exploit development make them a leading Czech provider for both traditional and next generation security testing.

Redamp Security Brno Based SME Pentest Partner

• Services: Provides penetration testing, vulnerability assessments, and security audits, covering:
  • Network infrastructure
  • Web and application security
  • Security audits with practical remediation guidance Focus is on clear, actionable fixes rather than lengthy theoretical reports.
• Certifications & Compliance: Engagements follow OWASP and NIST aligned methodologies. Reports support SMEs working toward GDPR or ISO 27001 readiness.
• Clients: Serves SMEs in the Czech tech sector, particularly startups and mid size businesses that need cost effective yet thorough testing.
• Pricing: Project based and SME friendly, with engagements scoped for affordability and clear outcomes.
• Key Strength: Known for its responsiveness and practical guidance, Redamp helps smaller organizations understand and remediate vulnerabilities quickly without enterprise level complexity.

Redamp Security, based in Brno, is a smaller Czech pentest boutique focused on SMEs and tech firms. With its hands-on, responsive approach and remediation first mindset, Redamp is trusted by local clients who need practical, affordable pentesting expertise.

EO Security Brno Based Red Team & Pentest Specialists

• Services: Provides comprehensive offensive security services, including:
  • Web and mobile application pentests
  • Network testing
  • Full scope red team engagements simulating advanced adversaries
  • Security training workshops for developers and IT staff Known for using custom tools and multidisciplinary teams to address diverse attack surfaces.
• Certifications & Compliance: Methodologies based on OWASP, NIST, and MITRE ATT&CK. Reporting tailored to GDPR, ISO 27001, and PCI DSS compliance needs.
• Clients: Works with startups and mid market clients across Czechia, often providing hands on, high engagement expertise.
• Pricing: Flexible and project based, affordable for growing businesses and mid sized firms, with scalable red team options.
• Key Strength: Recognized for custom tooling, practical training, and adaptable red team exercises, EO Security offers a balanced mix of testing and education, making it a valuable partner for fast scaling organizations.

EO Security, based in Brno, is a pentest and red team consultancy serving startups and mid market firms. With multidisciplinary teams, custom built tools, and added training services, EO Security combines technical assurance with practical knowledge transfer.

SnapStack Secure Design & Pentesting for Tech Firms

• Services: Provides web and mobile security testing, alongside:
  • Network and infrastructure security assessments
  • Thorough static/dynamic code audits
  • Deployment and configuration reviews to catch subtle misconfigurations Combines offensive testing with secure design consulting.
• Certifications & Compliance: Uses OWASP, NIST, and ISO 27001 aligned methodologies. Reporting supports GDPR and PCI DSS needs, particularly for tech firms handling sensitive data.
• Clients: Frequently engaged by Czech technology companies and startups, trusted for their ability to spot subtle, non obvious flaws during code and deployment reviews.
• Pricing: Project based, tailored to application complexity and code review scope. Often chosen for deep dive engagements beyond surface level pentests.
• Key Strength: Known for blending hands on pentesting with secure design expertise, SnapStack helps companies both find vulnerabilities and strengthen architecture against future risks.

SnapStack, based in Prague, is a pentest and secure design consultancy with strengths in web/mobile testing, code audits, and deployment reviews. For Czech tech firms seeking both bug discovery and proactive design advice, SnapStack delivers comprehensive, developer centric assurance.

Each of these companies typically follows a methodology like NIST SP 800 115 planning, reconnaissance, scanning, exploitation, and reporting.

They test against OWASP Top 10 vulnerabilities SQLi, XSS, SSRF, etc. and more advanced threats HTTP request smuggling, OAuth misconfig, SSRF exploits, etc. .

Many also examine business logic flaws that scanners miss. By comparing offerings and asking for sample reports, you can match your needs to the vendor’s strengths.

For example, Integra and Captes might highlight custom exploit development, whereas BDO and Axians emphasize compliance and broad coverage.

How to Choose the Right Provider Step by Step

1. Define Your Scope: Determine what needs testing web apps, mobile apps, network, cloud, IoT, etc. Include both external facing assets and critical internal systems. Remember to plan for internal vs external tests if both attacker perspectives matter.
2. Set Goals and Constraints: Decide if you need just vulnerability finding or a full red team style simulation. Identify any rules out of hours testing, IP allowlists, etc. . Consider regulatory requirements GDPR Article 32, ISO 27001, PCI DSS 11.3, etc. . A mature pentest company will help shape these goals.
3. Verify Expertise and Certifications: Look for certifications like OSCP, CREST, CISSP in the pen testing team. Check their track record. Have they done similar work in your industry? Ask for anonymized case studies or references. For example, if your concern is API security, ensure they know OWASP API Security Top 10 e.g. OWASP’s API6 Mass Assignment and related attacks.
4. Evaluate Methodology: Ensure they use both automated scans and manual analysis. An expert will explain their tools Burp, Nmap, Metasploit, etc. and how they validate findings. Check if they mention the following known frameworks PTES, OWASP Testing Guide . Ask how they handle emerging threats. A good sign is if they reference recent CVEs e.g. We test for Log4Shell, SSRF, deserialization issues like DeepStrike’s approach .
5. Compare Deliverables and Costs: Get sample reports or outlines they should be clear and prioritized critical, high, medium risks with remediation advice . Compare pricing models fixed package vs daily rates. In Czechia, expect pentest projects to cost tens of thousands of CZK per application or per week of work exact figures depend on scope . Avoid choosing solely by lowest bid quality matters more for security.
6. Check Support and Retesting: Good providers offer post test support answering questions during fixes and possibly a short retest period for remediated issues. If they offer it, consider penetration testing as a service or periodic retesting. Having a continuous relationship e.g. quarterly scans ensures new vulnerabilities are caught.

What to Look for in a Pentesting Provider

When evaluating top pentest firms, consider these factors:

• Scope of Services: Do they test what you need for web apps, mobile apps, networks, cloud, IoT, etc. ? For instance, Integra offers web, mobile, desktop, API, and cloud infra pentests external/internal . Sec4good also covers IoT and wireless networks. Aricoma even tests AI/LLM systems and ATMs. Make sure your provider covers all your critical assets.
• Methodology & Standards: Look for companies that follow established frameworks. DeepStrike, for example, adheres to NIST, ISO 27001, and OWASP top 10 standards in its testing. They should use a mix of manual testing and proven tools e.g. Burp Suite, ZAP and validate findings on your live code. Avoid vendors that rely purely on automated scans, as OWASP warns, automated tools can miss complex logic flaws.
• Certifications & Experience: Pentest teams should have real qualifications. Inquire about OSCP, OSWE, CEH, CISSP, CREST credentials. Look for experience in your industry finance, healthcare, etc. . For example, BDO CZ and Captes bring big company consulting backgrounds, while boutiques like Integra or SnapStack emphasize local Czech expertise. Certifications and case studies like DeepStrike’s JWT account takeover case show that the team has tackled real world security issues.
• Internal vs External Testing: Understand the difference. An external test simulates an outside hacker attacking your public assets websites, VPN, etc. , while an internal test assumes an attacker is already inside like a rogue employee. Both are important. For example, NÚKIB notes that internal tests simulate an insider or compromised machine inside the network. Ask if the vendor can cover both angles.
• Reporting & Remediation: Top firms don’t just dump a list of bugs. They provide clear, prioritized reports often with proof of concept exploits and work with your team on fixes. Some like Redamp Security emphasize consultative follow up. Check references or reviews Clutch, G2 for each vendor’s communication style.
• Compliance Needs: If you must meet GDPR or industry standards, ensure the pentest provider understands those requirements. DeepStrike’s blog notes that for frameworks like PCI DSS, SOC 2, HIPAA or ISO 27001, pentests must cover specific environments and provide certain evidence in reports. Internal checklists e.g. HIPAA pentest checklist or EU guidance can help define scope. The Czech NÚKIB even provides guidelines on engagement rules.

Common Mistakes & Myths

• Myth: Automated tools catch everything. In reality, scanners find only known, common flaws. OWASP warns there’s no silver bullet, human insight is needed for logic issues. Always pair tools with expert pentesters.
• Myth: One test a year is sufficient. As the continuous testing graphic shows, attackers only need a few weeks of vulnerability. Many breaches occur between annual tests. It’s smarter to do extra scans after major changes or use a continuous pentesting platform to shorten the feedback loop.
• Myth: Internal pentests aren’t needed if we’re secure outside. Even public facing success doesn’t guarantee internal safety. NÚKIB notes that insider threats or compromised devices can bypass perimeter controls. A breach could start from within e.g. stolen credentials , so include internal testing too.
• Mistake: Not defining scope clearly. Failing to specify what assets and roles are tested and with what privilege level leads to misunderstandings. Always clarify who on your team will interface with the testers, and what data they are allowed to touch.
• Mistake: Ignoring remediation post test. A pentest is only useful if you act on it. Allocate resources to fix the critical findings promptly. The pentesting company can provide prioritized fixes, but closure is up to you.
• Mistake: Choosing by buzzwords. Avoid hiring the most innovative or cutting edge vendor just on marketing talk. Instead, focus on proven track record certifications, case studies, and aligned methodology. Stuffy buzzwords like holistic or best in class tell you nothing.

Czech organizations today cannot afford to ignore pentesting. The threat level is only going up sophisticated phishing now using AI generated content and ransomware dominate breaches, and loopholes in code SSRF, auth flaws are actively exploited.

By engaging a top pentest firm in the Czech Republic, you get expert eyes on your security from web and mobile apps to networks and cloud setups. These experts help you discover and fix vulnerabilities before attackers do, while also demonstrating compliance with GDPR, ISO, and other standards.

Ready to strengthen your defenses? The threats of 2025 demand more than awareness, they require action. If you're looking to validate your security posture, identify hidden risks, or build a resilient defense strategy, DeepStrike is here to help.

Our practitioners provide clear, actionable guidance to protect your business. Explore our penetration testing services and see how we can uncover vulnerabilities before attackers do. Drop us a line we’re always ready to dive in.

About the Author: Mohammed Khalil is a Cybersecurity Architect at DeepStrike, specializing in advanced penetration testing and offensive security operations. With certifications including CISSP, OSCP, and OSWE, he has led numerous red team engagements for Fortune 500 companies, focusing on cloud security, application vulnerabilities, and adversary emulation. His work involves dissecting complex attack chains and developing resilient defense strategies for clients in the finance, healthcare, and technology sectors.

FAQ

• What exactly is penetration testing?

Penetration testing pen testing is an authorized security assessment where experts try to break into your systems apps, networks, etc. as an attacker would. It’s more thorough than a basic vulnerability scan. Pentesters use manual and automated methods to find flaws like SQL injection, XSS, SSRF, broken auth, etc. and help you fix them. Think of it as hiring ethical hackers to strengthen your cyber defenses.

• How often should my company do a penetration test?

It depends on risk level, but many standards suggest at least annually or after major updates. However, one yearly test leaves a long gap. If your business is critical finance, healthcare, e commerce , aim for more frequent testing e.g. semiannual or continuous . With modern attack rates and continuous integration, some firms now offer subscription based pentesting that runs constantly against your apps.

• What’s the difference between a vulnerability assessment and a penetration test?

A vulnerability assessment is typically a broad automated scan that lists potential issues like outdated software or missing patches . Penetration testing goes deeper, it actively exploits vulnerabilities to demonstrate real world impact. The pentest ethically hacks your system to show how an attacker could compromise it. In short, assessments find problems, pentests confirm which ones are dangerous by exploiting them in a controlled way.

• How much does penetration testing cost in the Czech Republic?

Prices vary widely by scope. A simple web app pentest might start in the tens of thousands of CZK, while large, complex engagements involving multiple apps, networks, etc. can run into the hundreds of thousands. Daily rates for experienced pentesters OSCP/OSWE certified often range from 20,000-40,000 CZK per day. Always get detailed quotes. The cheapest quote isn’t always the best depth of testing and quality of reporting are crucial for real value.

• Why is penetration testing required for GDPR compliance?

GDPR’s Article 32 calls for state of the art security measures, including regular testing of technical and organizational measures. This implies pentesting for systems storing EU personal data. While not explicitly saying pentest , regulators expect proactive security assessments. Failing to test could be seen as negligence if a breach happens. In the EU, non compliance fines can be huge up to €20M .

• What is the difference between black box and white box testing?

In black box pentesting, testers have no prior knowledge of your systems just as an outside hacker would . In white box testing, they have full access to source code, architecture diagrams, credentials to find deep issues. Black box tests real world attack paths, white box can reveal hidden backdoors or logic bugs. Some firms also offer gray box partial knowledge. The choice depends on your needs, often a mix of both yields the best coverage.

• Who are the top penetration testing companies in the Czech Republic?

As outlined above, top Czech pentest firms include Integra, Axians CZ, Captes, Sec4good, BDO CZ, Aricoma, Redamp Security, EO Security, SnapStack, and others. Each has its specialties e.g. web vs network, small business vs enterprise and strengths. We recommend reviewing their websites and asking for references or sample reports. Ultimately, the best company depends on your specific needs, sector, budget, scope , but the ones mentioned here all have solid reputations.