Security Threats Critical Threat Description

Ransomware: Prevention and Response

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Ransomware attacks can cripple organizations. Learn how to prevent attacks and respond effectively if targeted.

Understanding Ransomware

Ransomware is malicious software that encrypts files and demands payment for decryption. It's one of the most damaging cyber threats facing organizations today.

Common Attack Vectors

  • Phishing emails with malicious attachments
  • Exploit kits targeting software vulnerabilities
  • Remote Desktop Protocol (RDP) attacks
  • Malicious websites and drive-by downloads

Prevention Strategies

  1. Regular backups: Maintain offline, encrypted backups
  2. Patch management: Keep systems and software updated
  3. Email filtering: Block malicious attachments and links
  4. Network segmentation: Limit lateral movement
  5. User training: Educate staff about ransomware risks
  6. Endpoint protection: Deploy anti-malware solutions
  7. Access control: Implement least privilege principle

Incident Response

If you suspect a ransomware infection:

  1. Isolate affected systems immediately
  2. Activate incident response team
  3. Document everything
  4. Assess the scope and impact
  5. Do not pay the ransom (FBI recommendation)
  6. Restore from backups if available
  7. Report to authorities
  8. Conduct post-incident review