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Vulnerability management,
written down

Notes on scanning your attack surface, resolving vulnerabilities, and proving compliance from fellow practitioners.

11 articles

Vulnerability management

ENISA Threat Landscape 2026: key threats and trends for IT and security teams

ENISA Threat Landscape 2026 ranks financially motivated attacks as the greatest short-term threat to EU organisations. Findings and checks for IT teams.

Mathias Gatz 9 min
Compliance

How to answer a customer security questionnaire with vulnerability evidence

Answer vulnerability management questions in a customer security questionnaire with sample responses, an evidence checklist, and guidance for missing records.

Mathias Gatz 8 min
Vulnerability management

CISA is ending its weekly Vulnerability Bulletin. What changes?

CISA is ending its weekly Vulnerability Bulletin as it shifts from severity-based management to risk-based prioritization. What changes for security teams?

Mathias Gatz 5 min
Vulnerability management

Active vs passive vulnerability scanning: what each finds and misses

Compare active and passive vulnerability scanning: methods, blind spots, operational risks, and when to combine them for better coverage.

Mathias Gatz 9 min
Attack surface management

How forgotten subdomains become breach paths: the Novo Nordisk lesson

Exposed credentials on forgotten subdomains become breach paths. The Novo Nordisk incident shows lean teams how to control their external attack surface.

Mathias Gatz 7 min
Vulnerability management

Vulnerability assessment vs vulnerability management: where the line sits

A vulnerability assessment finds problems. Vulnerability management carries each finding to verified closure. Five tests to tell a real VM tool from a scanner.

Mathias Gatz 9 min
Compliance

DORA compliance: what the resilience-testing and ICT-risk requirements mean for your IT team

DORA compliance for in-house IT teams: the five pillars, who's in scope, and how to produce the resilience-testing evidence auditors expect.

Mathias Gatz 16 min
Compliance

NIS2 vs ISO 27001: overlaps, requirements, and the gap ISO 27001 leaves open

NIS2 vs ISO 27001 compared for lean EU IT teams: where Annex A and Article 21 overlap, the incident-reporting gap ISO leaves open, and how to prove both.

Mathias Gatz 7 min
Compliance

NIS2 compliance: the requirements, and how to prove you meet them

What NIS2 compliance requires under Article 21, who it applies to, the fines for non-compliance, and how to produce evidence an auditor accepts.

Mathias Gatz 16 min
Vulnerability management

What is a vulnerability scan? A practical guide for European IT managers

What a vulnerability scan does, how often to run one, and why the remediation lifecycle after the scan is what compliance auditors check.

Mathias Gatz 13 min
Vulnerability management

The vulnerability management lifecycle: how to prove every stage happened

The 6-stage vulnerability management lifecycle and the evidence each stage must produce for ISO 27001, NIS2, and DORA auditors.

Mathias Gatz 15 min