The light indicating that the camera is active turns on: Although some attackers can make the camera light not turn on, this is not always the case. If it turns on when you’re not using it, your device may have been hijacked.
Presence of strange files on your computer: If a cybercriminal has made a record of your webcam, there may still be files saved on your computer. Look for anything unusual, especially in the documents or video folders that are part of your hard drive.
Presence of unusual applications on your system: One of the most common ways cybercriminals use to record from your webcam is by using a RAT. Scan your computer with an anti-malware solution and check for any alerts about software that shouldn’t be on your PC or device.
Your settings have been changed: Another thing that malware like RATs often do to pave their way is interfere with security software that is installed on a machine or in the operating system. Check if any security features have been disabled.
To avoid any of these attacks, make sure that your PC, mobile device, or smart home is always up-to-date at the software level and that you have anti-malware software installed.