Understanding Ransomware and How to Prevent It

What is Ransomware?

Ransomware is malicious software that:

• Locks your files or computer
• Demands payment to unlock them
• Often threatens to delete your files

It's one of the most serious cyber threats facing businesses today.

How Ransomware Spreads

Common infection methods:

• Opening infected email attachments
• Clicking malicious links
• Downloading software from untrusted sites
• Visiting compromised websites
• Using infected USB drives

Warning Signs

Watch for these signs:

• Files suddenly won't open
• File extensions have changed
• A ransom message appears on screen
• Your computer becomes very slow
• Programs stop working properly

How to Prevent Ransomware

Be Careful with Emails

• Don't open attachments from unknown senders
• Be suspicious of unexpected attachments, even from known contacts
• Report suspicious emails to IT

Think Before You Click

• Avoid clicking links in suspicious emails
• Don't download software from untrusted websites
• Be wary of pop-ups asking you to download anything

Keep Everything Updated

Updates include security patches that protect against ransomware.

Use Strong Passwords

Weak passwords can let attackers into your system.

Back Up Your Work

Save important files to OneDrive or SharePoint. IT maintains backups, but you should save work regularly.

What to Do If You Suspect Ransomware

Immediate Actions:

• Disconnect from the network - Unplug the network cable or turn off WiFi
• Don't turn off your computer - IT may need to investigate
• Contact IT immediately - Call 1300 521 162
• Don't pay the ransom - There's no guarantee you'll get your files back

What IT Will Do:

• Isolate the affected computer
• Assess the damage
• Restore files from backups
• Investigate how it happened
• Strengthen protections

Remember

The best protection is prevention. If something seems suspicious, stop and ask IT. It's always better to ask than to click something dangerous.

Need Help?

For security questions, contact helpdesk@netlumait.com.au or call 1300 521 162.