We design, build, and secure critical systems that must remain operational in high-risk environments. Trusted where failure is not an option.
MINISTRY OF DEFENCE OF UKRAINEWe 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.
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 OPERATORWe 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.
UA DroneIDSecure IFF capability between drones, operators, and command structures, designed and used in active combat. Protects high-value assets and increases the operational efficiency of unmanned systems operating under continuous cyberattacks, EW, and active enemy countermeasures.
UNMANNED TRAFFIC MANAGEMENTWith 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 OPERATORWe 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.
Industries
We build and secure defence capabilities that remain operational under sustained adversarial pressure and high operational tempo.
We work with grid operators and vendors to enable continuous operation and build resilience against targeted cyber and physical attacks, keeping critical services available for millions.
We help novel financial services stay operational, secure, and resilient in an increasingly digitalised world shaped by evolving threats.
Security capability government agencies and ministries can build on — from technical investigation through to strategic advice the decision-makers act on.
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.
Center of Innovations and Defense Technologies Development of the Ministry of Defence of Ukraine
Lead mobile engineer at TradingCom
CTO and Co-founder at MadFish.Solutions
Software Engineering Manager at M&A SaaS provider
Founder of a blockchain software company after our cryptographic review
Founder and CEO at myGaru
creators of Bear app
CTO at GoClinic
CEO at AppSpector
Engineering Lead at Crossmint
Platforms
Cross-domain integration framework that secures and sustains sensitive data exchange between sensors, devices, and control systems across defence and critical national infrastructure — even in contested, degraded, or partially disconnected environments.
Fleet is a platform for building and running secure fleets of edge devices — UxVs, sensors, effectors, and data-acquisition hardware — across their whole lifecycle in adversarial, disconnected environments.
Helmet brings together our work securing AI at every stage — dataset and training-environment security, security of AI-enabled applications, and protection of models deployed at the edge. Built for active conflict, around real threats and operational requirements.
Services
We investigate like adversaries and verify like auditors — so the teams building critical products have clarity before they deploy.
Designed by engineers who have built and broken critical products — structured from day one around the threats that matter.
We bridge deep technical understanding with strategic vision, enabling public sector and defence institutions to act decisively and securely.
Some threats and environments have challenges that don't have known answers. This is where we carry out deep research, publish findings, contribute to engineering standards, and build novel technologies across our operational domains.
Services
We investigate like adversaries and verify like auditors — so the teams building critical products have clarity before they deploy.
Designed by engineers who have built and broken critical products — structured from day one around the threats that matter.
We bridge deep technical understanding with strategic vision, enabling public sector and defence institutions to act decisively and securely.
Some threats and environments have challenges that don't have known answers. This is where we carry out deep research, publish findings, contribute to engineering standards, and build novel technologies across our operational domains.
Solutions
The organisations building and running the systems nations depend on — that's who we work with. We make those systems hold, without slowing the innovation that progress depends on.
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