Maliciously crafted MP4 files can exploit vulnerabilities in outdated media players to execute code on your system. 2. Best Practices for Safety File checker: Scan files for viruses - NordVPN

Attackers sometimes name a file spy_chandigarh.mp4.exe . If your computer hides common extensions, it will look like a video, but it’s actually a program that can infect your device.

Files with "spy" in the name or obscure extensions (like .mp4) can sometimes be used to deliver malware or spyware.