We’ve had a lot of questions recently about how to check if a PC has been hacked. It’s a scary thought, but with cybercrime on the rise, it’s more important than ever to keep an eye on your digital security.
So, how do you know if your PC has been compromised? Let’s break it down with some clear signs and simple steps you can take.
Signs Your PC Might Be Hacked
Here are the red flags to watch for:
1. Slower Than Usual Performance: If your PC suddenly feels sluggish, it could mean malware or unauthorized programs are running in the background.
2. Pop-Ups and Strange Ads: Unusual pop-ups, especially when you’re not browsing, are a classic sign of adware or other malicious software.
3. Unfamiliar Programs or Files: Check your installed programs list or file directories. If you spot software you don’t remember installing, it could be malware.
4. Your Antivirus Is Disabled: Hackers often disable security software to avoid detection. If your antivirus has mysteriously turned off, that’s a big warning sign.
5. Unusual Activity: Your accounts are sending emails or messages you didn’t write, unexpected password changes / login attempts or increased internet data usage without a clear reason.
6. Strange Desktop Behaviour: Files disappearing or being moved, the cursor or programs operating as if someone else is controlling them.
Steps to Check If You’ve Been Hacked
If you suspect foul play, here’s how to investigate:
1. Run a Malware Scan: Use trusted antivirus or anti-malware tools like Windows Defender, Malwarebytes, or Bitdefender. They can detect and remove many threats.
2. Check Task Manager: Open Task Manager (Ctrl + Shift + Esc) and look for processes using a lot of resources that you don’t recognize. A quick online search can help identify them.
3. Inspect Your Network: Use tools like GlassWire to monitor your network traffic. Unusual spikes or unknown devices on your network can indicate a problem.
4. Review Security Logs: On Windows, open Event Viewer and look for unusual login attempts. Check your online accounts for unrecognized logins (Google, Microsoft, etc.).
5. Update Everything: Hackers exploit vulnerabilities in outdated software. Ensure your operating system, apps, and drivers are up to date.
6. Disconnect From the Internet: If you’re sure your PC has been hacked, disconnect it from the internet to prevent further damage or data theft.
How to Protect Yourself in the Future
- Use strong, unique passwords and enable two-factor authentication (2FA).
- Install reliable antivirus software and keep it updated.
- Avoid suspicious links or email attachments, even from people you know.
- Backup your data regularly to an external drive or cloud service.
Need Help?
If you think your PC has been hacked but aren’t sure how to fix it, don’t panic. At Novo IT Ltd, we can perform a security audit, remove any malware, and help secure your system to prevent future attacks.
Cybersecurity doesn’t have to be scary. Stay alert, stay informed, and stay safe! 🛡️
Disclaimer: This article was created with the assistance of AI tools based on prompts and guidance provided by Novo IT Ltd.

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