Mitigating malware and ransomware attacks
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How to defend organisations against malware or ransomware attacks.
Adapted edition
- Document type
- Reference Guide
- Format
- DOCX
- Pages
- 7
- Language
- English
- Version
- 1.0
- Updated
- 2026-09-16
- Category
- Information security
- Licence
- Open Government Licence v3.0
Description
How to defend organisations against malware or ransomware attacks for organisational planning, review and training. NCSC guidance is advisory and should be applied to the organisation's own risks and obligations.
Contents
- In this guidance
- What are malware and ransomware?
- Should you pay the ransom?
- Using a defence in depth strategy
- Actions to take
- Steps to take if your organisation is already infected
- Recovering from a highly disruptive cyber attack
- Note
- Further advice
- Report
- Cyber Incident Response
- Cyber Essentials
- Additional guidance
- Source links
Source and licence
National Cyber Security Centre
AttributionNational Cyber Security Centre, “Mitigating malware and ransomware attacks” (13 February 2020), reused under the Open Government Licence v3.0.
ChangesAdapted 16 September 2026: converted the official HTML article into neutral text-only DOCX and PDF editions. Preserved article headings, paragraphs, lists and plain-text source-link destinations; normalized web whitespace and typographic punctuation; omitted site navigation, topic and download cards, images, logos, scripts, styles and page furniture.
Version history
- v1.016/09/2026