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Security assurance | Cossack Labs

Trusted where failure is not an option

  • Ministry of Defence of Ukraine
  • datasite
  • nec
  • EvoLogics
  • Delta
  • tezos-foundation

Cossack Labs'
security assurance approach

We go beyond superficial security review: we focus on getting to the root causes of security weaknesses in architecture and implementation, and help you eliminate them.

Over a decade of building, hardening, and assessing mission-critical systems — across command-and-control system in active conflict, Ukrainian power grid, regulated financial services, and healthcare providers — has shaped a security assessment practice built on depth, not volume. We apply the same standard across your software, hardware, cryptography, and cloud infrastructure — or any combination of them, however novel.

The result is a tailored, in-depth security assessment that gives engineers clarity, management confidence, and a foundation for long-term cybersecurity improvement.

Highlighted projects

  • Product security programme for Ukraine’s primary C2 system

    Ukraine’s primary C2 system operates under daily nation-state-level cyberattacks. Cossack Labs works with the DELTA team as a security engineering partner: helping build and maintain a product security programme, as well as hardening more than 30 integrated systems so that the ecosystem remains operational, secure, and resilient under continuous adversarial pressure.

  • Protecting military personnel data at scale

    Over 1 million active-duty military personnel rely on the platform's digital services, developed by the Ministry of Defence of Ukraine. The platform runs dozens of business integrations – each a potential threat vector. We work with the Army+ team on the platform's product security programme to design and implement a multi-layered security system that reduces the risks of data compromise and enables the security of integrations.


    How we work

    [01]

    Defining scope and depth

    The scoping phase defines the assessment’s boundaries and goals. It clarifies priorities by creating an in-depth understanding of all in-scope and out-of-scope elements and establishing the applicable regulatory and compliance requirements that will shape the assessment. We gather the context, access, and documentation so our engineers can start with clear rules of engagement targeting your practical priorities.

    [02]

    Risk assessment and threat modelling

    In this phase, we identify and evaluate the risks that could impact your product or system. The outcome is a set of prioritised risks and threats that serves as a reference point for the entire review. All security findings are aligned against this risk baseline, ensuring that recommendations are driven by what matters to your products and the threat landscape. Risk model then focuses security review on risks that matter, not threats that look alarming but would never cause significant damage.

    [03]

    Security assessment

    We carry out a detailed technical review to identify security issues and their root causes, and provide technical suggestions on how to improve. Our work is based on industry-proven standards and our optimised internal methodologies and practices. We don't stop at security flaws, we look for broken or missing security controls, as the structural gaps often have a greater impact than individual bugs.

    [04]

    Solution design (if needed)

    Not all security issues can be resolved with a simple patch. Sometimes, the right fix requires designing a new subsystem or rethinking part of the architecture. Our security engineers work alongside your team to design solutions that are secure, practical and aligned with the risk and threat landscape.

    [05]

    Reporting

    As we work, we share findings on the go in a format that suits your workflow, including engineering tickets, status updates, architecture documents, and executive summaries. Our reporting ensures you have a clear view where things stand and what to do next.

    [06]

    Verification

    When your developers implement a security fix, our security engineers verify the change and approve or reject it. Once fixes are confirmed, we update the final assessment report to reflect the improved cybersecurity posture and demonstrate measurable progress.

    What you get

    As a result, you get a realistic picture of your product's security posture and a clear path to improving it.

    What our partners say

    • The security engineering team cares not only about security but also about the product itself. It creates real alignment, making security feel like a natural part of the process rather than just a compliance checkbox.

      Col. Artem Martynenko

      Center of Innovations and Defense Technologies Development of the Ministry of Defence of Ukraine

      Tell us what you're building

      Pentests and compliance audits show you the surface. We assess what's underneath.

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