| ISS | Internet Security Systems Kassel, http://www.iss.net/emea/germany |
| ISA | Internet Security and Acceleration [Server] |
| ISA | Internet Security and Acceleration [Server] |
| IPSO | Internet Protocol Security Option |
| RIPSO | Revised Internet Protocol Security Option |
| CIPSO | Common Internet Protocol Security Option |
| ISAKMP | Internet Security Association Key Management Protocol |
| IPSEC | Internet Protocol Security Protocol |
| BZZ | Brize Norton Grossbritanien [Internationaler Airport Code] |
| mnu | Menüdatei [Norton Commander] eine Dateiendung |
| NCD | Norton Change Directory |
| nts | Tutorial-Datei [Norton] eine Dateiendung |
| qag | Gruppendatei [Norton Desktop] eine Dateiendung |
| ext | Extension Datei des Dosnavigator [Norton Commander] eine Dateiendung |
| ng | Hypertext-Datenbank [Norton Guide / ExpertHelp u.a. Clones] eine Dateiendung |
| cdx | File Asistant [Norton Desktop f. Win]/Indexdatei[Navcis] eine Dateiendung |
| nil | Norton Icon Editor Icon-Library eine Dateiendung |
| ncd | Directory-Datei [Norton Change Directory] eine Dateiendung |
| naiin | no abuse in internet e.V. - Verein gegen Missbrauch im Internet Berlin, http://www.naiin.org/de |
| ES | Enhanced Security |
| SM | Security Management |
| SAS | Security Association |
| RSI | Repent Security, Inc. |
| COMSEC | Communications Security |
| RHSA | Red Hat Security Advisory |
| ESM | Enterprise Security Manager |
| CSA | Cyber Security Agency, EU |
| GSS | Generic Security Service |
| EROS | Enhanced Return Of Security |
| DSA | Debian Security Advisory |
| CSI | Computer Security Institute San Francisco, USA |
| MSP | Message Security Protocol |
| ISS | Integrated Security Systems Irving, [TX], http://www.integratedsecurity.com |
| CLSR | Computer Law & Security Report |
| CSS | Central Security Service Abteilung des US-Amerikanischen Geheimdiensts NSA |
| ISSI | Information Security Systems Inc. |
| MLS | Multi Level Security |
| LSM | Linux Security Module |
| LSA | Local Security Authority |
| CSEA | Cyber Security Enhancement Act |
| GSA | Global Security Architecture |
| VSC | Voice Security Card |
| SLS | Shared Level Security |
| SCA | Security Control and Audit |
| SDB | Security Policy Database |
| SEC | Security Exchange Commission |
| SEL | Security Enhanced Linux |
| SID | Security Identification / Identifier |
| SPI | Security Parameter Index |
| SRP | Security Rollup Package |