If curiosity gets the best of you, run it through an online scanner like VirusTotal before clicking.

Always enable "Show file extensions" in your operating system settings to see if there is a hidden .exe or .scr at the end.

On some systems, the full name might actually be Sexy Girl (286).mp4.exe .

If you didn't specifically ask for it, it’s almost certainly malicious.

This specific naming convention (Provocative Subject + Number + Extension) peaked during the era of Peer-to-Peer (P2P) sharing apps like LimeWire and Kazaa. It became a bit of an internet meme because almost everyone who used those services eventually "downloaded a virus" that looked exactly like this. 4. How to Stay Safe If you encounter a file or email with this subject: