Cyber Security Framework

The choice depends on your industry, regulatory environment, and objectives. ISO 27001 is the standard for organizations seeking an internationally recognized certification. NIST CSF 2.0 serves as a flexible, risk-based framework — particularly where no certification requirement exists. BSI IT-Grundschutz is often mandatory for KRITIS operators and public institutions in Germany. For financial firms, BAIT/VAIT and DORA are additionally relevant. ADVISORI advises across industries and recommends the framework that fits your risk profile and regulatory landscape.

Published in February 2024, NIST CSF 2.0 introduces three key changes: First, the new Govern function, which explicitly anchors cybersecurity at the leadership level and defines responsibilities, policies, and risk management strategies. Second, a broader target audience — the framework now applies to all organizations, not just critical infrastructure. Third, improved implementation guidance with concrete profiles and tier descriptions for maturity assessment.

Duration varies depending on scope and maturity level: A NIST CSF 2.0 implementation typically takes 4–

8 months, ISO 27001 certification 8–

18 months, and BSI IT-Grundschutz 12–

24 months. We recommend a phased approach: Quick wins in the first

3 months (policies, risk register, top‑10 controls), followed by systematic build-out. This delivers visible improvements quickly while ensuring sustainable development.

The investment depends on company size, the chosen framework, and current maturity level. For a mid-sized company (500–2,

000 employees), ISO 27001 certification typically involves consulting costs of EUR 80,000–250,

000 plus internal effort. A NIST CSF assessment with roadmap starts at approximately EUR 30,000. Crucially, the cost of a framework implementation is a fraction of the average cost of a data breach — according to the IBM Cost of a Data Breach Report 2023, this stands at USD 4.45 million globally.

Each industry has its own regulatory requirements that influence the framework selection: Banks must comply with BAIT and, from 2025, DORA; insurers must comply with VAIT. KRITIS operators are subject to the IT Security Act 2.0 and, going forward, NIS2. Pharmaceutical and medical technology companies require GxP-compliant IT security. ADVISORI has extensive experience across all these industries and integrates sector-specific requirements directly into the chosen framework.

Yes, and this is even recommended. NIST CSF 2.0 and ISO 27001:

2022 complement each other ideally: NIST provides the risk-based framework with clear functions and categories, while ISO 27001 delivers the detailed controls and certification path. Approximately 80% of NIST CSF subcategories can be directly mapped to ISO 27001 controls. ADVISORI develops an integrated control framework that covers both standards and avoids duplication of effort.