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Applicable for: Windows

Signs that your computer might have been hacked

This article provides guidance on identifying signs of a potentially hacked computer and steps to resolve the issue using Norton scans.

Signs Your Computer May Be Hacked

  • Frequent pop-up windows, especially those encouraging visits to unusual sites or downloads

  • Changes to your home page

  • Mass emails being sent from your account

  • Frequent crashes or unusually slow performance

  • Unknown programs starting automatically

  • Programs connecting to the internet without permission

  • Unusual activities like password changes

Many Norton plans include the Norton Virus Protection Promise, which gives you access to Norton experts who can help diagnose and remove viruses during your subscription. Learn more: What is Norton Virus Protection Promise?

Run advanced scans by Norton

Run the following scans with advanced settings and highest sensitivity. Start with the Startup Scan, followed by the Full Scan.

Note: These settings may increase scan duration depending on your system speed and file volume.

Run a Startup Scan:

  1. Open your Norton device security application.
  2. On the left panel, click Security.
  3. On the Scans tile, click Open.
  4. In the Preset scans tab, next to Startup Scan, click Set Up.
  5. Wait for the Startup Scan to complete the setup, then click Restart Now.
  6. When the system restarts, the Startup Scan progress screen appears. Wait for the scan to complete and check the scan results.

After completing the Startup Scan, proceed with a Full Scan to ensure thorough device check.

Run a Full Scan:

  1. Open your Norton device security application.
  2. On the left panel, click Settings.
  3. Select Scans.
  4. Hover the mouse pointer over Full Scan and click the settings icon.
  5. Scroll down and select Scan all archives.
  6. Click Save to confirm.
  7. Click Start next to Full Scan.
  8. Wait for the scan to complete and check the scan results.

If both scans complete successfully and no threats remain, restart your device and monitor for any recurring issues.

If Norton cannot remove the virus, contact Norton Support for expert assistance: Member Services & Support.

Keep Your Device Safe

  • Keep Norton updated with the latest virus definitions

  • Avoid clicking on suspicious pop-up ads

  • Scan email attachments before opening

  • Scan files downloaded via file-sharing programs

Staying vigilant and maintaining updated security software helps protect your device from future threats.

DocID: v109569350
Last modified: 08/21/2025

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