IT Acronyms

While this website focuses on Information Security Acronyms, some general IT Acronyms, like certain OT and privacy acronyms, are also important to know when trying to understand information security. Therefore, this page also lists some relevant IT Acronyms. Note that this list does not aim to provide a complete list of all possible IT Acronyms but only to provide the most relevant ones that might be used in combination with information security acronyms.

  • API = Application Programming Interface
  • ARP = Address Resolution Protocol
  • BYOD = Bring Your Own Device
  • CLI = Command Line Interface
  • CPU = Central Processing Unit
  • CRC = Cyclic Redundancy Check
  • DHCP = Dynamic Host Configuration Protocol
  • DNS = Domain Name System
  • FIFO = First In First Out
  • FTP = File Transfer Protocol
  • HTTP = HyperText Transfer Protocol
  • IaaS = Infrastructure-as-a-Service
  • IANA = Internet Assigned Number Authority
  • ICMP = Internet Control Message Protocol
  • IMAP = Internet Message Access Protocol
  • IP = Internet Protocol
  • IPv4 = Internet Protocol, version 4
  • IPv6 = Internet Protocol, version 6
  • LAN = Local Area Network
  • LIFO = Last In First Out
  • LILO = Last In Last Out
  • MPLS = Multiprotocol Label Switching
  • NAT = Network Address Translation
  • OS = Operating System
  • OSPF = Open Shortest Path First
  • PaaS = Platform-as-a-Service
  • PDU = Protocol Data Unit
  • POP3 = Post Office Protocol, version 3
  • RAM = Random Access Memory
  • RIP = Routing Information Protocol
  • ROM = Read-Only Memory
  • RTP = Real-time Transport Protocol
  • SaaS = Software-as-a-Service
  • SDN = Software-Defined Networking
  • SMTP = Simple Mail Transfer Protocol
  • SNMP = Simple Network Management Protocol
  • SSID = Service Set Identifier
  • TCP/IP = Transmission Control Protocol/Internet Protocol
  • TFTP = Trivial File Transfer Protocol
  • UDP = User Datagram Protocol
  • UUID = Universally Unique Identifier
  • URI = Uniform Resource Identifier
  • URL = Uniform Resource Locator
  • URN = Uniform Resource Name
  • USB = Universal Serial Bus
  • VLAN = Virtual Local Area Network
  • VM = Virtual Machine
  • WAN = Wide Area Network
  • WPA = Wi-Fi Protected Access
  • WWW = World Wide Web

Also check out the additional acronym lists: