I'm not very tech-savvy and was using my laptop at a library when the mouse suddenly started behaving strangely. After I stopped touching it, the pointer moved by itself and even pulled one of my two open tabs into a separate window. I put the laptop to sleep, disconnected it from the internet, and ran a quick scan, which reported no threats. What could have caused this, and what steps should I take to make sure my laptop is safe and prevent it from happening again?
4 Answers
The touchpad may have been registering accidental touches or could be malfunctioning. Try disabling it temporarily with the touchpad function key, usually one of the F-keys used with Fn. If the problem stops, have the touchpad checked or use a separate USB mouse.
For reassurance, run a full scan with the built-in Windows antivirus, then reconnect to the internet and run a second-opinion scan with Malwarebytes. Also review Installed Apps for unfamiliar remote-access programs such as AnyDesk or RustDesk, and make sure Windows Remote Access is disabled. If nothing suspicious appears, a hardware or wireless-mouse issue is much more likely than someone controlling the laptop.
The most likely explanation is a mouse or connection problem rather than a hack. If it’s a basic wireless mouse with a USB receiver, another nearby wireless mouse could possibly have interfered with it, especially in a public place. Replacing the battery, reconnecting the receiver, or testing with a different mouse would be good first steps.
You can narrow it down if it happens again: disconnect the laptop from Wi-Fi while the pointer is moving. If the behavior continues, the mouse or touchpad is probably the cause. If it stops immediately, investigate remote-access software and account security further. A scan tool that checks online services cannot perform that part while the computer is offline, so reconnect only when you’re ready to use it.

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