"B5" often refers to a building floor (Basement 5) or a specific camera zone, while "120" might indicate a timestamp or sequence number.
If you found this file in a shared directory or received it from an unknown source, please consider the following: b5_120.mp4
Large organizations often use alphanumeric codes to catalog internal training modules. "B5" often refers to a building floor (Basement
Files with common extensions like .mp4 can sometimes be used to mask malicious scripts. Use a tool like VirusTotal to scan the file. b5_120.mp4