DOCUMENT LIBRARY
Standards & compliance documents
Free, official reference material on the standards and regulations referenced throughout this site — official texts and guides only, linked directly to the source (BSI, EUR-Lex, ISO, ISA). Nothing here requires signup.
ISMS & ISO/IEC 27001
BSI · Official · PDF
IT-Grundschutz-Kompendium (Edition 2023)
BSI's full baseline-protection catalog — the German ISMS methodology, an accepted alternative/complement to ISO 27001.
Download PDF ↗
ISO · Official · Free guide
ISO/IEC 27001:2022 — Practical Guide for SMEs
ISO's own free handbook explaining ISO/IEC 27001 clause-by-clause for smaller organizations (the full standard itself is a paid purchase from iso.org).
View / Download ↗
NIS2 Directive
EUR-Lex · Official · PDF
Directive (EU) 2022/2555 — Full Text
The official NIS2 Directive text: scope, essential/important entity obligations, Article 21 security measures, and incident reporting duties.
Download PDF ↗
BSI · Official · Hub page (DE)
BSI NIS-2 Guidance & Downloads
BSI's German-language NIS2 hub with FAQs, registration guidance, and downloadable one-pagers (incl. NIS2 ↔ ISO 27001 mapping).
Open on bsi.bund.de ↗
IEC 62443 (OT / ICS)
ISAGCA · Official · Free PDF
ISA/IEC 62443 Quick Start Guide
The ISA Global Cybersecurity Alliance's free overview of the full 62443 series — structure, stakeholder roles, and where to start.
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ISA · Official · Reference page
ISA/IEC 62443 Series Overview
ISA's official reference page mapping every part of the 62443 series to the stakeholder group it applies to (asset owner, integrator, supplier).
Open on isa.org ↗