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Insights & Guides

Cybersecurity & Compliance
Insights for EU Businesses

Practical guides on cybersecurity, regulatory compliance, and digital resilience for businesses across the EU, written by the BlueCyber team.

Latest Articles

Practical guides from the field:
compliance, network security, and beyond

We write about what we see every day: practical, actionable and free of jargon.

Whitepaper
Compliance Supply Chain NIS2 DORA

June 2026  ·  Whitepaper  ·  Adrian Boscu, MSc

Vendor Security Assessment & Compliance Validation

A practical framework for assessing third-party vendors: risk tiering, evidence-based validation, technical assessment, contract clauses and ongoing monitoring. Includes ready-to-use checklists, a scorecard and a decision matrix mapped to NIS2, DORA, ISO 27001 and NIST CSF.

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Whitepaper
Network Security NIS2 Zero Trust OT/ICS

May 2026  ·  Whitepaper  ·  Adrian Boscu, MSc

Network Segmentation and Enhancing Security in Hybrid On-Premises and Cloud Infrastructure

A practitioner's guide to designing and implementing network segmentation strategies for complex enterprise environments, covering the Purdue model, Zero Trust, OT/ICS considerations, cloud segmentation, and compliance alignment across NIS2, ISO 27001, IEC 62443, and DORA.

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Network Security Zero Trust

March 2026  ·  7 min read  ·  EU

Why Microsegmentation Is the Missing Layer in Your Hybrid Security Strategy

Research-backed comparison of identity-based segmentation vs. microsegmentation in hybrid on-premises and cloud environments, and why layering both delivers the strongest security posture.

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NIS2 Manufacturing

March 2026  ·  6 min read  ·  EU

NIS2 Compliance for Manufacturers: What EU Companies Need to Know in 2026

NIS2 is no longer a future problem. National laws are in force in Romania, Poland and Czech Republic, and regulators are moving to enforcement. This guide covers the 5 core obligations, OT security challenges, and a practical 4-step approach to get compliant.

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DORA Financial Services

March 2026  ·  7 min read  ·  EU

DORA Compliance Checklist for Financial Services: Is Your ICT Framework Audit-Ready?

DORA has been legally binding since 17 January 2025, no grace period, no phased rollout. This checklist covers all five DORA pillars, the three most common gaps in financial-sector ICT frameworks, and a prioritised action timeline for getting compliant.

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Network Security Firewall Management

February 2026  ·  8 min read  ·  EU

From Network Complexity to Control: A Practical Process for Firewall Rule Cleanup

A step-by-step process for firewall rule cleanup in real enterprise environments, from establishing ownership and mapping communication flows to challenging insecure patterns and building continuous governance.

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Network Security Operations

January 2026  ·  5 min read  ·  EU

The Hidden Cost of Network Complexity

Most organisations don't have a network security problem, they have a network complexity problem. Learn why tooling is not the bottleneck, how tribal knowledge creates risk, and what actually works to reduce complexity without buying more tools.

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Not sure where to start?

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