10 Signs Your Computer Has Been Hacked and How to Respond

Detecting that your computer has been hacked early can save you from significant data loss, financial loss, and further security issues.

Here are 10 warning signs that your computer may have been hacked, along with steps to take if you suspect a breach:

Warning Signs Your Computer Has Been Hacked

1. Unusual Pop-Ups and Ads:
   1. Pop-ups and ads appearing frequently, especially ones that you can’t close or look suspicious.
   2. What to do: Run a malware scan with a trusted antivirus program and avoid clicking on any suspicious links.
2. Slow Performance:
   1. Your computer is running significantly slower than usual.
   2. What to do: Check your task manager for any unusual processes and perform a full system scan for malware​​​
3. Programs Crashing or Failing to Launch:
   1. Applications unexpectedly crash or refuse to open.
   2. What to do: Update your software and drivers, and scan for malware.
4. Unusual Network Activity:
   1. High network activity when you’re not using the internet.
   2. What to do: Use a network monitoring tool to identify suspicious traffic and disconnect from the internet if necessary.

5. Unexpected Reboots or Shutdowns:

   1. Your computer restarts or shuts down without warning.

   2. What to do: Check for system updates, ensure your OS is up to date, and scan for malware.

6. Unfamiliar Programs or Files:

   1. New programs or files appear on your computer that you didn’t install.
   2. What to do: Uninstall unknown programs and delete suspicious files, then run a full system scan.

7. Disabled Antivirus Software:

   1. Your antivirus software is turned off or uninstalled without your permission.
   2. What to do: Reinstall or re-enable your antivirus software and perform a thorough scan.

8. Unusual Account Activity:

   1. Unauthorized access to your online accounts or strange activity, such as password change alerts.
   2. What to do: Change your passwords immediately using a secure device and enable two-factor authentication (2FA).

9. Mouse Moving on Its Own:

   1. Your mouse cursor moves independently or makes selections without your input.
   2. What to do: Disconnect from the internet and run a malware scan. Consider reinstalling your operating system if the issue persists.

10. Inability to Access Files or Ransom Messages:

    1. Files are encrypted or inaccessible, or you receive ransom messages.
    2. What to do: Disconnect from the internet, do not pay the ransom, and contact cybersecurity professionals for assistance.

What to Do If You Suspect a Hack

1. Disconnect from the Internet: Immediately disconnect your computer from the internet to prevent further data transmission to the hacker.

2. Run a Full System Scan: Use a reliable antivirus or anti-malware program to scan your entire system.

3. Change Passwords: Change passwords for all your accounts, starting with your most critical ones, such as email, banking, and social media.

4. Update Software and OS: Ensure that your operating system and all software are up to date with the latest security patches.

5. Check for Unauthorized Software: Uninstall any unfamiliar programs and remove suspicious files.

6. Enable Two-Factor Authentication (2FA): Add an extra layer of security to your accounts by enabling 2FA wherever possible.

7. Backup Important Data: Regularly back up your important data to an external drive or cloud storage to protect against data loss.

8. Monitor Financial Statements: Keep an eye on your bank and credit card statements for any unauthorized transactions.

9. Consult Cybersecurity Professionals: If the situation seems severe or you’re unable to resolve it, seek help from cybersecurity experts.

10. Educate Yourself on Cybersecurity: Stay informed about the latest cybersecurity threats and best practices to prevent future attacks.