It’s very difficult to provide a list of characteristic symptoms of a
infected computer because the same symptoms can also be caused by
hardware incompatibilities or system instability,however here are just a
few examples that may suggest that your PC has been compromised :
- You may receive the error “Internet Explorer could not display the page” when attempting to access certain websites
- Your web browser (e.g., Microsoft Internet Explorer, Mozilla Firefox, Google Chrome) freezes, hangs or is unresponsive
- Your web browser’s default homepage is changed
- Access to security related websites is blocked
- You get redirected to web pages other than the one you intended to go to
- You receive numerous web-browser popup messages
- Strange or unexpected toolbars appear at the top of your web browser
- Your computer runs slower than usual
- Your computer freezes, hangs or is unresponsive
- There are new icons on your desktop that you do not recognize
- Your computer restarts by itself (but not a restart caused by Windows Updates)
- You see unusual error messages (e.g., messages saying there are missing or corrupt files folders)
- You are unable to access the Control Panel, Task Manager, Registry Editor or Command Prompt.
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