Making your products more secure
At the core of our security services is one goal: making our customers’ products more secure and hardening them against attacks. With deep knowledge in secure coding, cryptography, AI, and a wide range of Linux technologies, we cover many product areas.
We approach security not just as auditors, but as engineers who design and build complex, secure systems, from IoT devices to large cloud platforms. Because we understand the base technologies so well, we know exactly how to break them and, more importantly, how to use and fortify them.
Core Security Capabilities
AI Security
AI integration introduces novel and unpredictable attack vectors. We help you navigate this frontier by evaluating machine learning models and data pipelines.
Source Code Audits
White-box source code reviews are one of the most cost-efficient ways to assess your product’s security posture and find vulnerabilities such as memory corruptions, logic flaws, and misconfigurations.
Cryptography: Audit, Consulting & Engineering
We provide end-to-end cryptographic support, from checking that your current implementations are sound to building future-proof systems from the ground up.
IoT & Embedded Security
We engineer and review secure embedded systems, with targeted penetration testing and design assessments for constrained environments.
Linux OS Hardening
Our core team maintains parts of the Linux kernel, so we can offer deep-dive Linux expertise across consulting, engineering, and security reviews.
Technical Resilience & Regulatory Readiness (NIS2, CRA)
We skip administrative checkbox compliance and make sure your systems meet the technical demands of modern regulations like the Cyber Resilience Act and NIS2.
Penetration Testing & Reverse Engineering
We simulate sophisticated attacks to expose structural weaknesses, and deconstruct proprietary binaries to understand complex system behavior.
Secure Systems Design & Threat Modeling
We help you map your attack surface before a single line of code is written, and architect secure systems from high-level infrastructure down to bare-metal protocols.
Software Supply Chain & CI/CD Security
We help you secure your pipeline from code commit to deployment, so the integrity of your releases holds up under attack.
Custom Services
If the services above do not fully meet your needs, get in touch to discuss additional work. We are happy to tailor our offerings to your requirements.
How We Solve Security Challenges
"I need to have my web application audited for security vulnerabilities."
We perform a rigorous Source Code Audit focused on your backend. We read your code to find complex business logic flaws and authorization bypasses that automated tools cannot see.
"We need to prepare our connected product for the CRA and ensure our cryptography is future-proof."
We combine our Technical Resilience, IoT Security, and Cryptography expertise. We assess your system for CRA readiness, audit the firmware, and evaluate your architecture for PQC migration.
"We're shipping a connected device and want our secure boot implementation reviewed before launch."
We run a focused IoT & Embedded Security review. We audit your verified-boot chain, key handling, and hardware root of trust, and confirm the implementation holds up against realistic attacks.
Your Benefits
As a boutique firm, we skip the usual corporate overhead and give you direct, immediate access to senior-level experts. We offer flexible scheduling, including short-term engagements, so our security deep-dives fit into your development lifecycle. And while our team is small and specialized, we have a wide network of trusted partners for large projects.
Time to team up
Some customers hire us for a long-term security strategy, others need to find that one bug. No matter the issue, we get to the bottom of it. The best way to do that is to get to know you and your team and work out the right solution together. Let’s team up and secure your products.
Get in touch
sigma star gmbh
Eduard-Bodem-Gasse 6, 1st floor
6020 Innsbruck | Austria
