We assess the security of applications under development, SaaS platforms, APIs, source code, cloud environments, and development infrastructure. We help identify vulnerabilities before deployment, protect customer data, and reduce software supply chain risks. The testing scope is tailored to the solution’s architecture, development approach, and lifecycle stage.
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We have completed more than 3,000 cybersecurity projects.
More than 14 years of experience in ethical hacking.
A team of 47 certified experts.
Our experts have discovered more than 20 officially registered vulnerabilities.
Security findings identified in 2025.
Software products process customer data, communicate with external services, and often support the operations of other organizations. A successful attack can therefore affect not only the software vendor but also its customers, partners, and users.
Risks can arise in source code, APIs, cloud configurations, third-party libraries, and deployment processes. A vulnerability in a single component can lead to data leakage, account takeover, service disruption, or compromise of the software supply chain.
Security testing helps identify weaknesses during development, before deployment, and after major updates. Development teams can address them before they affect users or production environments.
We identify vulnerabilities in applications, APIs, source code, and related services before they can be exploited.
We assess how the product stores, processes, and transmits sensitive data and whether unauthorized access is possible.
We assess risks associated with libraries, external services, integrations, and software build and deployment processes.
Testing provides developers with specific recommendations for resolving findings and improving future product versions.
Innovatrics, s.r.o.
Viktor Bielko | IDV Toolkit Product Manager
Costlocker a.s.
Tomáš Wojcik | CEO & Co-founder
Slovensko.Digital
Marek Ceľuch I Senior Developer
ComAp a.s.
Jan Tomandl | Chief Product Analyst
We tailor testing to the type of software product, its architecture, deployment model, and stage of development.
We assess applications and solutions developed for customers. We help identify vulnerabilities before the product is delivered or deployed to production.
We test multi-tenant applications, customer data isolation, user management, APIs, cloud infrastructure, and external integrations.
We help define an appropriate testing scope before a product launch, investment round, entry into a new market, or cooperation with a major customer.
We assess software integrated into customer environments, including privileged access, updates, and software supply chain risks.
We assess authentication, authorization, data protection, business logic, and application resilience against known attack techniques.
We test communication between systems, access controls, input validation, and opportunities to obtain or modify data without authorization.
Through manual and automated analysis, we identify security flaws, risky functions, and incorrectly implemented security controls.
We assess cloud service configurations, identities, storage, network rules, containers, and publicly accessible interfaces.
We test code repositories, automated build and deployment processes, access permissions, and the protection of sensitive data.
We identify vulnerable components, outdated packages, and supply chain risks that could compromise the product.
We assess authentication, multi-factor authentication, user roles, administrator accounts, and the separation of data between customers.
We test connections to suppliers, payment services, analytics tools, and other systems that affect product security.
Software companies are increasingly required to demonstrate that security is considered throughout the product lifecycle. Testing a completed application shortly before deployment is not enough. Security requirements must be incorporated into design, development, testing, update distribution, and the handling of newly discovered vulnerabilities.
Testing helps identify weaknesses, plan remediation, and verify the effectiveness of implemented measures. However, it does not replace legal assessment or a comprehensive compliance audit. We explain when to choose an audit, a penetration test, or both approaches in our article Security Audit vs. Penetration Testing.
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The Cyber Resilience Act introduces cybersecurity requirements for software and hardware products with digital elements throughout their lifecycle. Testing helps identify product vulnerabilities and verify the effectiveness of implemented security measures.
NIS2 emphasizes cyber risk management, supply chain security, and vulnerability management. Its requirements may apply directly to the software company or arise through its customers and supplier relationships.
ISO/IEC 27001 supports systematic information security management across people, processes, and technologies. Security testing can help verify the effectiveness of technical controls and identify areas for improvement.
SOC 2 is particularly important for SaaS companies and digital service providers that need to demonstrate the effectiveness of their security controls to customers. A penetration test is not explicitly mandatory, but in practice it provides important technical evidence for assessing system resilience and preparing for a SOC 2 audit.
OWASP ASVS provides requirements for verifying application security. OWASP SAMM helps organizations assess and improve security throughout the software development process. Product security can be assessed through penetration testing of web applications, APIs, and mobile applications.
Attackers can exploit a vulnerability in an application, API, software library, or the development process itself. A single vulnerability can compromise not only the software vendor but also its customers and users.
Weaknesses in authentication, password recovery, or session management can allow an attacker to gain access to user accounts and sensitive data.
Authorization flaws, vulnerable APIs, or insufficient tenant separation can expose information to other users or unauthorized parties.
An attack against a code repository, developer account, or CI/CD process can allow malicious code to be inserted into an upcoming product release.
A vulnerable or compromised library can provide an attack path into the product and subsequently affect multiple customers.
An attack against the application, cloud environment, or related infrastructure can cause a SaaS platform outage and disrupt its users’ operations.
Explore security testing for other industries or learn how penetration testing and Red Teaming assess the resilience of your technologies, employees, and processes.
See how we tailor security testing to the technologies, risks, operating conditions, and regulatory requirements of organizations across different industries.
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Through realistic attack simulations, we assess web and mobile applications, APIs, cloud environments, internal infrastructure, AI systems, and other technologies.
Learn more about penetration testing
Through a comprehensive attack scenario, we assess the resilience of technologies, employees, and internal processes, as well as the security team’s ability to detect, stop, and manage an attack.
Learn more about Red Teaming
The Citadelo team holds dozens of certifications, including OSWE, OSCP, OSED, API Penetration Testing, AWS Certified Security – Specialty, and eWPTXv2, relevant to secure development and testing of software, source code, APIs, and cloud applications.
We use our experience from testing applications, APIs, cloud environments, and infrastructure to create realistic scenarios. We safely verify vulnerabilities and provide developers with specific remediation recommendations.
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Answers to common questions about security testing for software products, SaaS platforms, and development environments.
Testing provides the greatest value during development and before the product is deployed to production. We also recommend it after a major update, architectural change, new API integration, or before an audit or entry into a new market.
Not always. We can test the product without knowledge of its source code or with access to the code, documentation, and architecture. We select the appropriate approach according to the objectives, scope, and development stage.
Yes, provided that the nature of the product and agreed conditions allow it. Before testing begins, we define the scope, safety boundaries, schedule, and procedure for handling critical findings.
Yes. Testing can cover web and mobile applications, APIs, cloud environments, source code, CI/CD environments, identities, software dependencies, and external integrations. This allows us to identify attack paths created by combined weaknesses across multiple components.
Yes. We manually assess processes, user roles, and application rules. We look for opportunities to bypass controls, manipulate transactions, abuse functionality, or gain access to another user’s data.
Yes. Testing can provide technical evidence for identifying product vulnerabilities and verifying the effectiveness of implemented measures throughout its lifecycle. However, it does not replace legal assessment or a comprehensive conformity assessment.
Yes. We identify outdated or vulnerable components, risky packages, and third-party dependencies. We also assess the potential impact of their exploitation on the product and its customers.
The development team receives a technical report describing the vulnerabilities, supporting evidence, verification steps, and specific remediation recommendations. We can also review the findings directly with developers and explain remediation priorities.
Yes, a retest can be included in the agreed project scope. Once remediation is complete, we verify whether the vulnerabilities have been properly resolved and whether the changes introduced any additional security risks.
The frequency depends on the product’s risk profile and development pace. We recommend repeating testing after significant changes to the code, architecture, or integrations, as well as regularly according to customer or regulatory requirements.
Book a free 15-minute consultation. Together, we will define the appropriate testing scope based on your product architecture, development stage, and most significant security risks.
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