IT Security | Knowledge | Mathias Ellmann

Knowledge topic

Technical safeguards, configurations, logs, vulnerabilities and evidence-based reconstruction. This overview brings together the published technical articles and provides entry points into further technical questions.

Professional boundary: The articles address technical and methodological questions. Legal evaluation and legal advice remain separate.

Technical articles

7 published

Examining Vulnerabilities in IT Systems

How vulnerabilities are examined by separating affected version, exposure, exploitability, technical impact, safeguards, historical state and limitations.

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Technical Analysis of Log Data

How log sources, timestamps, parsing, identifiers, event correlation, exports and limitations are examined for a traceable technical reconstruction.

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Security Configuration and Access Rights

How target security concepts, identities, authentication, effective permissions, configuration changes and access paths are examined against the actual system state.

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Reconstructing a Security Incident

How logs, system states, configurations, timelines, counter-hypotheses and confidence levels are combined to reconstruct a security incident technically.

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Patch Levels, Dependencies and Security Updates

How system states, direct and transitive dependencies, security-update availability, deployment evidence and runtime effectiveness are reconstructed for a defined date.

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Backup, Recovery and Technical Resilience

How backup scope, retention, integrity, restore chains, RPO, RTO and residual dependencies are examined using actual technical evidence.

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Network Boundaries and Exposed Services

How system boundaries, externally reachable services, segmentation, network rules, identity controls and unexamined paths are assessed from defined observation points.

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Author's technical literature and publications

The following works provide additional technical and methodological context. They do not replace required primary sources, standards, manufacturer documentation or other independent specialist sources. Unpublished manuscripts, drafts and teaching materials are deliberately not presented here as public sources.

Technical question in this topic?

For an initial professional review, the technical question, an overview of available documents and the desired timeframe can be provided.

Information for Courts & Law Firms