: Use a reputable tool like Malwarebytes or Windows Security to perform a full system scan.
: Once opened, these files typically do not play a video. Instead, they may install: Trojans : To give hackers remote access to your computer.
: Ensure your file explorer is set to "Show file extensions" so you can see the true nature of a file (e.g., seeing Romantic Teen 1.mkv.mp4.exe ).