Julie.mp4.mkv.mp4 [TRUSTED]

Stacking extensions is a classic hallmark of someone trying to bypass automated email filters or security scanners that look for specific file types. 🛑 Best Practices to Stay Safe

An attacker creates a malicious executable script and names it GreatVideo.mp4.exe . JULIE.mp4.mkv.mp4

By default, operating systems like Microsoft Windows often hide known file extensions to keep the interface looking clean. Malicious actors exploit this default setting to engineer visual traps: Stacking extensions is a classic hallmark of someone

.mp4 and .mkv are both video containers. There is no legitimate reason to stack them consecutively in a single file name. JULIE.mp4.mkv.mp4