EASM
QSEIDON ATLAS
External Attack Surface Management
Discover, assess and monitor your external attack surface. QSEIDON ATLAS helps you understand what attackers can see before they exploit it.
Discover AtlasNext-Generation Cybersecurity
Security
beyond classical computing
QSEIDON combines External Attack Surface Management, Penetration Testing, AI Security and Quantum Security to protect complex digital systems against today's and tomorrow's threats.
We help organizations understand their external exposure, validate real risks, and secure intelligent and quantum-enabled systems against modern and future attack surfaces.
Quantum ComputingEASM SolutionsArtificial Intelligence
What we do
From external visibility to deep-tech security research.
PENTESTING
Penetration Testing
Validate real risks
We conduct manual technical security reviews for web applications, APIs, infrastructure and cloud environments to identify exploitable vulnerabilities.
Learn about PentestingAI SECURITY
AI Security
Protect intelligent systems
We test AI applications, LLM-based systems, RAG architectures and agentic workflows against attack patterns such as prompt injection, data leaks and abuse scenarios.
Explore AI SecurityQUANTUM
Quantum Security
Prepare for future threats
We explore and assess the security implications of quantum computing, quantum machine learning and post-quantum transition risks.
Explore Quantum SecurityFrom Visibility to Validation.
QSEIDON ATLAS delivers an attacker's outside perspective on your organization. Our penetration testing services validate whether identified vulnerabilities are actually exploitable. Our AI security and quantum security work extends this approach to new technologies and new classes of attack surfaces.
- 01
Atlas — Shows what attackers can see.
- 02
Penetration Testing — Validates what attackers can exploit.
- 03
AI Security — Protects the next generation of intelligent systems.
- 04
Quantum Security — Prepares for future technological developments.
About usBuilt on research.
Built on research.
Proven in practice.
We are a team of security researchers, engineers and strategists dedicated to protecting the world's most innovative organizations against growing cyber threats.
20+
Years of experience
14+
Completed projects
Research-driven
From science to practice
High-risk environments
Regulated & critical systems
We are shaping the future of cybersecurity
At Qseidon, we know that today's digital landscape requires more than traditional security measures. Our team combines cutting-edge research in quantum computing, artificial intelligence and advanced threat detection to deliver solutions that protect against current and future threats.
We work with organizations at the forefront of innovation – from fintech startups to operators of critical infrastructure – ensuring their digital systems stay secure while they push the boundaries of what's possible.
Precision
Targeted security solutions for your unique infrastructure
Innovation
Pioneering quantum-safe and AI-powered security approaches
Partnership
Trusted advisors at your team's side
External Attack Surface ManagementSee your organization
See your organization
through the eyes of an attacker
Discover, assess and monitor your entire external attack surface with Qseidon's comprehensive EASM service. Know what attackers see – before they exploit it.
Continuous Discovery
Automatic identification of all externally facing assets, including unknown shadow IT and forgotten infrastructure.
Risk Assessment
Expert-driven prioritization of all potential threats and management-ready reporting.
Concrete Action Recommendations
No tool noise. Real guidance for systematically reducing your attack surface.
Continuous Attack Surface Visibility
Organizations today struggle to keep track of their growing digital footprint. With cloud services, SaaS applications and shadow IT, your attack surface is bigger than you think. Qseidon's EASM service provides continuous monitoring of your entire attack surface in three comprehensive steps.
- 1
Discover
Understand exposure & threat scenarios
- 2
Validate
Test, simulate attacks, quantify risks
- 3
Secure
Prioritized actions, patterns, governance and verification
Discover how QSEIDON ATLAS helps security teams gain visibility into unknown internet-facing assets, shadow IT, and exposed services.
Quantum Computing SecurityPrepare for the
Prepare for the
quantum era
Security testing and hardening for quantum software. With a focus on robust, attack-resistant quantum machine learning.
Security Testing
Threat Modeling & Attack Simulation
Test your quantum software and keep track of threats.
Analysis
Quantum Vulnerability Analysis
Analyze and evaluate your quantum circuits and QML pipelines.
Best Practices
Secure-by-Design Patterns
Build secure quantum software with proven guidelines and patterns.
Start your quantum-safe journey
Our quantum security experts give you an overview of your most important quantum threats and vulnerabilities and advise you directly on your next steps.
Research & Development
SecQDevOpsSecure Quantum Development & Operations
Funded by the European Union
SecQDevOps
Secure Quantum Development & Operations
Funded by the European UnionSecure Quantum Development & Operations
Advancing secure quantum software through European collaboration
As part of this EU-funded consortium, we work closely with leading partners from various European countries across academia and industry. This international cooperation brings together diverse perspectives and expertise to advance secure and trustworthy quantum technologies. Our contribution focuses on identifying and analyzing vulnerabilities in quantum code to detect security risks early and support the development of robust engineering practices.
More information at secqdevops.euQuantum is already underway
Quantum research is growing rapidly – and so are its potential applications. Our team actively participates in research projects around quantum software, security and machine learning. We always welcome new ideas and questions – just get in touch.
ContactLet's secure your
Let's secure your
digital future
Ready to strengthen your security posture? Our experts help you navigate the complex cybersecurity landscape.