Pop-ups, a slow computer, strange new programs, or your browser acting up — these can all be signs of malware. Don’t panic: most infections can be cleaned up by following these steps in order.
Note: Informational guide. If a work or shared device is affected, tell your IT team first.
Signs you might have malware
- Sudden pop-up ads or your browser redirecting to strange sites.
- The computer is much slower or crashes often.
- New toolbars, extensions, or programs you didn’t install.
- Your antivirus or updates got disabled.
- Friends receive spam from your accounts.
Step 1: Disconnect from the internet
Turn off Wi-Fi or unplug the network cable. This stops malware from sending your data out or downloading more. If you need another device to read these steps, that’s fine.
Step 2: Boot into Safe Mode (if possible)
Restarting into Safe Mode loads only the essentials, which stops most malware from running and makes it easier to remove. (Windows and Mac both have a Safe Mode — search your version for exact keys.)
Step 3: Run a full antivirus scan
Use a reputable antivirus to run a full scan, not a quick one, and let it quarantine or remove what it finds. A second opinion from a well-known on-demand scanner can catch anything the first missed.
Step 4: Remove suspicious programs and extensions
- Uninstall any programs you don’t recognise from the last time things were normal.
- Remove unknown browser extensions.
- Reset your browser settings if it was hijacked.
Step 5: Change your passwords
Malware may have captured your passwords. From a clean device, change your important passwords — email and bank first — and check if any have leaked. Turn on 2FA while you’re at it.
Step 6: Update everything
Update your operating system, browser and apps. Many infections get in through outdated software, so patching closes the door.
When to get help (or wipe and reinstall)
If the malware keeps coming back, you see ransomware demanding payment, or you’re unsure, it’s reasonable to ask a professional or back up your files and reinstall the OS for a truly clean start. Never pay a ransomware demand without expert advice.
Stop it happening again
- Keep antivirus and updates on.
- Only install from official sources.
- Learn to spot phishing, the most common way malware gets in.
Conclusion
To remove malware: disconnect, boot into Safe Mode, run a full antivirus scan, uninstall anything suspicious, then change your passwords from a clean device and update everything. If it persists or you see ransomware, get help or reinstall. Then build the habits that keep it from returning — updates, official downloads, and a healthy suspicion of unexpected links.
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