Ransomware prevention best practices:
Prevent and respond to ransomware attacks

Back up your files

• Follow the 3-2-1 backup rule:
  • Keep three copies of data.
  • Use two different storage types.
  • Maintain at least one offsite or cloud backup.
• Automate regular backups.
• Periodically test backup restoration.

Patch vulnerabilities

• Regularly update operating systems, browsers, and antivirus software.
• Apply security patches for all applications and third-party tools.
• Enable automatic updates wherever possible.
• Keep track of vendor advisories for newly disclosed vulnerabilities.

Employ email filtering

• Block malicious attachments, executables, and phishing emails.
• Scan links and attachments for malicious content.
• Continuously monitor inbound email traffic for anomalies.

Provide least-privilege access

• Grant users only permissions required for their roles.
• Limit administrative privileges and privileged account usage.
• Implement role-based access control and enforce strong authentication protocol.
• Regularly review and manage unnecessary or inactive accounts.

Educate end users

• Train employees to recognize phishing and social engineering attacks.
• Train users to follow best practices for handling email attachments safely.
• Encourage secure browsing and download practices.

Employ an intrusion detection system

• Cut off ransomware attacks in their early stages with continuous monitoring.
• Deploy ransomware detection systems that can detect anomalous behavior quickly.
• Generate real-time alerts for security incidents.

Logically separate networks

• Segment networks into isolated zones based on function and risk.
• Separate critical systems from user networks.
• Restrict lateral movement between network segments.

Respond effectively after a ransomware attack