How To Avoid Ransomware

Submitted by julie.naughton on
How to avoid ransomware

How can you avoid falling victim to ransomware? Reduce your chances by adopting the following safety practices:

 

The Most Important Protection: Backups

Keep regular backups of your files — automated if possible. Store them in three places:

  • On your computer
  • External drive (unplug after backup!)
  • Cloud backup service

A backup that is connected can be encrypted by ransomware. If you have clean backups, ransomware loses its power.

Be Smart With Email and Phone Calls — Phishing Is the #1 Cause of Ransomware

Many ransomware attempts start with a fake email or call.

Don’t click links or attachments unless:

  • You expect them
  • You confirm who sent them
  • Hover over links — does the address look wrong?

PDFs and Word docs can contain malicious macros. Disable Office macros unless your business requires them.

Keep Your Software Updated

  • Update Windows / Mac updates.
  • Update browsers and extensions.
  • Update PDF readers, Java, Zoom, Office, etc.
  • Turn auto-updates on where possible.

Hackers target old versions with known vulnerabilities. Sometimes, restarting your electronic devices is required for the software to update.

 

Use Security Tools

  • Install reputable antivirus / anti-malware protection.
  • Enable firewalls (Windows and Mac have built-in ones).
  • Use a password manager to avoid password reuse.
  • Enable DNS filtering if you can — it blocks known malicious sites.

For small businesses: Consider endpoint detection and response (EDR) software.

 

Be Careful With Admin Privileges

  • Don’t browse the internet as an admin.
  • Create a regular user account.
  • Only grant admin rights when needed.

If ransomware runs with admin rights, it can encrypt far more.

 

Protect Remote Access

If your business uses Remote Desktop (RDP), secure it:

  • Require VPN first

  • Use strong unique passwords

  • Enable Multi-Factor Authentication

  • Close RDP if not needed

 

If You See Signs — Act Fast

Early signs can include:

  • Files slowly renaming or locking
  • New programs you didn’t install
  • PC suddenly becomes very slow
  • Pop-ups about encryption or payment

Immediately disconnect from Wi-Fi / Ethernet

  • Inform your IT or managed service provider

  • Time matters — ransomware spreads quickly across drives and networks.

Never Pay the Ransom

  • There is no guarantee you’ll get your data back.
  • Many who pay are targeted again.
  • It funds crime and often violates regulatory rules (especially for government and financial sectors).

Quick Cheat Sheet 

Do: 

  • Back up files offline
  • Auto-update software
  • Verify suspicious emails
  • Use antivirus and a firewall
  • Require multi-factor authentication

 

Don’t:

  • Open unexpected attachments
  • Use reused passwords
  • Give admin rights to anyone