Imagine turning on your computer and seeing a message that all your files — photos, documents, everything — have been locked. To get them back, you need to pay hundreds or thousands of dollars to a criminal. That’s ransomware, and it’s one of the fastest-growing threats online.
The good news: a few simple habits can protect you almost completely.
How Ransomware Gets In
Ransomware doesn’t just appear on your computer. It needs you to accidentally let it in. The most common ways:
- Email attachments — A fake invoice, shipping notice, or “urgent” document that’s actually malware
- Clicking bad links — Links in emails, texts, or social media that take you to infected websites
- Outdated software — Old versions of Windows, browsers, or apps have security holes that ransomware exploits
Ransomware can spread to every device on your home network. If one computer gets infected, it can lock files on shared drives and other connected devices.
How to Stay Safe
1
Keep everything updated. Turn on automatic updates for Windows, macOS, your browser, and your apps. Updates patch the security holes that ransomware uses to break in.
2
Don’t open unexpected attachments. If you receive an email with an attachment you weren’t expecting — even from someone you know — don’t open it. Their account may have been hacked.
3
Back up your files regularly. This is your best defense. If ransomware locks your files, you can simply restore them from a backup. Use an external hard drive or a cloud backup service.
4
Use antivirus software. Windows Security (built into Windows 10 and 11) is actually quite good. Make sure it’s turned on and running. On Mac, keep your system updated — macOS has built-in protection.
The single most effective thing you can do is keep regular backups. If your files are backed up, ransomware loses all its power — you can just wipe your computer and restore everything.
If You See a Ransom Message
- Don’t pay. There’s no guarantee you’ll get your files back, and paying encourages more attacks
- Disconnect from the internet immediately to prevent it from spreading
- Contact a professional or use your backups to restore your files
Quick Win
Turn on automatic updates right now. It takes 30 seconds and closes the most common entry point for ransomware.