SecurCheckCyber Center
Need help
Back to analysis tools
All cyber threats
Malware

Computer worm

Computer worm

Standalone malware capable of spreading automatically from one device to another.

Fiche de sensibilisationPrête à diffuser à vos équipes ou clients

MIGHT YOU BE AFFECTED?

Turn knowledge into action.

How does this work?

It exploits a vulnerability or network share without requiring a file to be opened repeatedly.

REAL-WORLD EXAMPLE

« An unpatched workstation is infected and automatically attacks other machines on the network. »

Typical sequence

  1. 1Exploit a vulnerability
  2. 2Copy itself automatically
  3. 3Spread rapidly

Warning signs

  • Abnormal network traffic
  • Multiple devices affected
  • Services restarting

How to protect yourself

  • Update systems
  • Segment the network
  • Filter unnecessary services

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.

Get help

Last updated: 6 September 2026