| Abbreviation | Definition |
|---|---|
| MMG | Master Mobilization Guide |
| MMS | McAfee Mobile Security |
| MNE | Management of Native Encryption |
| MNSA | Master in National Security Administration |
| MNSA | Ministry of National Security of Azerbaijan |
| MOAB | Mother Of All Breaches |
| MPPE | Microsoft Point to Point Encryption |
| MSAU | Marine Security Augmentation Unit |
| MSAU | MSG Security Augmentation Unit |
| MSCD | Managed Service for Cyber Defense |
| MSE | Microsoft Security Essentials |
| MSEO | Media Server Encryption Option |
| MSIC | Maritime Security Identification Card |
| MSIEA | Multi Stage Image Encryption Algorithm |
| MSIP | Menlo Security Isolation Platform |
| MSP | Maritime Security Program |
| MSP | Mutual Security Program |
| MSRT | Maritime Security Response Team |
| MSSC | Maritime Safety and Security Center |
| MSSI | Modular Security Systems Inc |