A file may appear to be an MP4 but is actually an executable. For example, a file named Hidden Cam (03).mp4.exe will often hide the .exe suffix on Windows systems with default settings. Once clicked, the "video" does not play; instead, a script runs in the background.
To stay safe, users should adhere to strict digital hygiene: Hidden Cam (03) mp4
The malware may encrypt the user's personal files, demanding payment for their release. A file may appear to be an MP4 but is actually an executable
Run any downloaded file through a reputable antivirus or an online scanner like VirusTotal before opening it. the "video" does not play