15+ years of security-focused product work
From CryptTalk to KvantPhone and KvantMail (incl. white-label), Arenim-linked teams have spent years building products where trust, confidentiality, and resilience are part of the core value proposition.
Software engineered for environments where security and resilience are non-negotiable
We develop software for business-critical and security-sensitive environments where failure, downtime, or weak protection are simply not acceptable. From internal core systems to cybersecurity products, we build with security embedded in the engineering process from day one.
Proven experience in security-focused software
For more than 15 years, we have been developing security-focused software products and communication solutions for demanding environments. This includes products such as CryptTalk, KvantPhone, and KvantMail — including white-label implementations.
Selected recognitions
ISACA recognition, ITBN award, Developer Heroes, and Secure Call Center domain leadership — signals that reinforce the team’s credibility in high-trust contexts.
International media coverage
Our product story has appeared in outlets including Financial Times, Politico Europe, Security Journal UK, and IT Brief UK.
Third-party review mindset
We work closely with trusted external experts and ethical hacking teams to challenge assumptions and continuously improve security outcomes.
From business-critical applications to cybersecurity products, we build software where security is never an afterthought.
Press articles covering our security-focused software developments and products
Hungary’s CryptTalk boosted by encryption controversy
CryptTalk was found to be secured to a very good standard and no practically exploitable vulnerabilities were found.
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Hungarian startup offers encryption with no backdoor key
Politico Europe on secure communications and encryption without backdoor access.
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Hungarian group unveils quantum-proof KvantPhone platform
IT Brief UK on KvantPhone and the quantum-proof secure communications platform.
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Arenim Group launches new quantum platform
Coverage of the KvantPhone launch and the Arenim Group’s quantum-secure communication platform.
Read articleOur approach to secure software development
Understanding the risk landscape
We begin by understanding the business context, the criticality of the system, and the security expectations around it — identifying the risks, constraints, and protection requirements that should shape the solution from the outset.
Researching the right technology choices
Before implementation begins, we assess the technology landscape to identify the most suitable solutions — reviewing current best practices, maturity, security characteristics, and operational trade-offs, with impact assessments where needed.
Designing for security and reliability
We define architecture, data flows, integration model, and operational boundaries with security and resilience in mind — including deliberate decisions around access control, data handling, fault tolerance, and platform design.
Developing with security built in
Our teams apply secure development practices throughout implementation — robust, maintainable code, reduced attack surface, and engineering discipline that supports both quality and long-term reliability.
Testing and hardening the solution
We validate security and reliability through structured testing, reviews, and controlled release processes. Where needed, we involve trusted third-party ethical hacking teams with whom we work closely.
Supporting ongoing improvement
Secure software development does not end at release. We continue to refine, maintain, and strengthen the solution as requirements evolve, threats change, and systems grow in complexity.
Some of our satisfied customers
Our team has delivered across telecom, finance, e-commerce, cybersec and software-driven businesses.
Why our customers choose us
Start your secure software development journey with us!
Whether you need secure software or secure digital products, we are ready to help.
Tell us what you are building, what must be protected, and where the risks lie.
We help organisations develop secure, resilient software that performs reliably in demanding environments.
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