Malware
Ransomware
Ransomware
Malware that encrypts or blocks data and then demands a ransom, often after stealing it.
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MIGHT YOU BE AFFECTED?
Turn knowledge into action.
How does this work?
An attack often begins with a compromised account, an attachment or an exposed service without a security patch.
REAL-WORLD EXAMPLE
« A company's files become unreadable and a note demands payment in cryptocurrency. »
Typical sequence
- 1Gain initial access
- 2Spread and steal data
- 3Encrypt files and extort payment
Warning signs
- Renamed or unreadable files
- Unusual activity
- A ransom note
How to protect yourself
- Keep isolated, tested backups
- Apply security patches promptly
- Use MFA and network segmentation
If you think you are affected
Stop the affected activity, isolate exposed devices or accounts, preserve evidence, revoke suspicious access and contact the appropriate security professional.
Last updated: 6 September 2026