Proven where failure
is not an option

Trusted to build and maintain product security programme for Ukraine’s primary C2 system.

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
We improved our applications, deepened our knowledge of application security, and gained a better understanding of mobile platform security. Your team’s knowledge and friendliness made the entire process easy and enjoyable. We are excited about future collaborations.
Konstantinos Natsios
Lead mobile engineer at TradingCom
We asked Cossack Labs engineers to review the security and cryptography in our products. What we’ve got was beyond expectations: a highly detailed analysis and lots of practical advice on how to fix current issues and implement long-term enhancements, all of them in line with our security and business goals.
Korney
CTO and Co-founder at MadFish.Solutions
I have definitely learned A LOT since we started working together with Cossack Labs. I have learned to be a better engineer because of their knowledge in mobile security.
Ronald
Software Engineering Manager at M&A SaaS provider
Thank you very much for all you did so far & the thoroughness, skill & knowledge you invested into this, all of you!
Founder of a blockchain software company after our cryptographic review
Cossack Labs shares myGaru’s mission to put individuals in the center of digital processes and give control on personal data back to users. Cossack Labs team is building secure data processing components and the privacy layer of myGaru solution.
Vitalii Morozenko
Founder and CEO at myGaru
We were thrilled work with Cossack Labs, leveraging their 15+ years of experience, to secure Bear user`s notes. It enabled us to elevate our core user experience with the security and privacy our users demand.
Shiny Frog team
creators of Bear app
Cossack Labs covered our back in data security, helping us to serve our customers better and target not only private hospitals, but also governmental healthcare companies.
Andrei Popa
CTO at GoClinic
End-to-end encryption engine based on Themis and Acra allows us to scale our product and attract new customers while being sure that their data is available only to them.
Sergey Zenchenko
CEO at AppSpector
Engaging with Cossack Labs has been a transformative experience for our team and our platform. Establishing secure development practices with design and code review was just one facet of our engagement, they also helped us immensely in developing processes, education, evaluating third-party vendors, managing security researchers, and many more.
Austin Feight
Engineering Lead at Crossmint

Highlighted projects

MINISTRY OF DEFENCE OF UKRAINE
Risk Assessment Framework for the Ukrainian Ministry of Defence
We helped Ministry of Defence of Ukraine develop a Risk Assessment Framework that assesses and mitigates risk across its defence information and communication systems — grounded in first-hand understanding of how adversaries operate against defence systems in active conflict.
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.
UKRAINE’S MAIN GRID OPERATOR
Enabling continuous grid operations under active conflict conditions
We built a hardware-software cross-domain system that integrates with existing energy infrastructure without interrupting operations. Acting as a reserve data acquisition system, it enables national grid resilience against targeted cyber and physical attacks — keeping operators in control even under partial loss of operational control, including during mass attacks on energy facilities.
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.
UA DroneID
Friendly drone identification technology
UA DroneID is a security and identification technology for unmanned systems that must operate in contested, degraded, and adversarial network conditions. As cybersecurity partner on the programme, we shaped the standard, security, and reference implementation for integration of unmanned systems into control and coordination system.
UNMANNED TRAFFIC MANAGEMENT
Integrating civilian UxVs into conflict airspace
With military and civilian drones sharing active conflict airspace, authorities needed a framework to safely integrate UxVs into national airspace — now and post-war. We delivered recommendations tailored to Ukraine's operational realities, creating a foundation for safe drone traffic coordination today and technologically sound regulation tomorrow.
UKRAINE’S MAIN GRID OPERATOR
Hardened the core of Ukraine's national power grid
We helped the grid operator rapidly build a secure, reserve hybrid-cloud capability for core grid technology, and supported live migrations under active threat exposure. Addressing the security challenges of virtualising OT, we were able to establish back-up OT infrastructure with seamless transition between primary and reserve systems.

We partner with operators who run mission-critical systems and the vendors who build them

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