VigilHorizon

Cybersecurity Knowledge Hub

ISO 27001 and NIS2: similarities and key differences

ISO 27001 and NIS2 approach the same area from two perspectives: the standard structures information security management, while the legislation establishes operational and reporting obligations. The differences between NIS2 and ISO 27001 begin with operational evidence — continuous monitoring, reporting deadlines and service recovery capabilities. A certificate confirms that a system exists and has passed an independent assessment. People, processes and rapid response are what put obligations into practice.

Knowledge centre

19 August 2026

IT security audit — what it covers and when to carry one out

An audit is complete when the organization knows what to fix first, who owns it and by when. After a first IT security audit, a company with no incident history usually receives a list: outdated servers, former administrators’ accounts, missing second-factor authentication and untested backups. There was no attack, but risk had existed for months; human decisions and a consistent process closed the gaps. Learn the scope of an audit and when to schedule one.

Knowledge centre

19 August 2026

Penetration testing — how does it differ from vulnerability scanning?

Vulnerability scanning alone does not show whether identified weaknesses can actually be exploited. We explain how penetration testing differs from vulnerability scanning and when to use each approach.

Knowledge centre

5 August 2026

NIS2 compliance audit — how to prepare your organisation

How can you check whether your organisation meets NIS2 requirements? We explain the compliance audit process, the areas it covers and how to prepare your company to implement the directive’s requirements effectively.

Knowledge centre

28 July 2026

NIS2 and security monitoring—which requirements really apply?

Does NIS2 require 24/7 security monitoring or an in-house SOC? We explain the obligations relating to incident detection and handling, and how to meet the directive’s requirements in practice.

Knowledge centre

28 July 2026

EDR, XDR and MDR — how they differ and when they protect your business

EDR, XDR and MDR are often treated as synonyms, although they perform very different functions. We explain their differences and when they improve an organisation’s security.

Knowledge centre

18 March 2026

SIEM in your company — why deployment alone does not improve security

A SIEM system can analyse millions of events, but without appropriate processes and response it remains merely a source of logs. We show why technology without a SOC team does not provide effective protection.

Knowledge centre

14 February 2026

MTTD and MTTR — why detection time determines incident impact

In cybersecurity, minutes matter. We explain MTTD and MTTR and how they affect the scale of losses during a security incident.

Knowledge centre

11 January 2026

Incident response—what does responding to a cyberattack involve, step by step?

What happens after a cyberattack is detected? We present the Incident Response process, from threat identification and isolation to restoring secure operations.

Knowledge centre

3 December 2025

What is SOC 24/7? How a Security Operations Center works and why monitoring is not enough

Infrastructure monitoring is only the beginning. Learn how a real SOC differs from a basic alerting system and why knowing about an incident does not, by itself, mean you are secure.

Knowledge centre

12 November 2025

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