airgap
Physical security barrier
An airgap is a security measure that physically isolates a computer or network from unsecured connections, especially the internet.
The term comes from the literal gap of air between the protected system and potential threats—no cable crosses it, no wireless signal bridges it.
Airgapped systems store sensitive data: classified government files, nuclear facility controls, cryptocurrency wallets.
As a verb, to airgap is to isolate a system this way: We airgapped the server after the breach.
Network access control system
- cybersecurityProtection of digital systems
- encryptionConverting data into code
- confidentialityQuality of protecting secrets
- authenticationConfirming genuine identity
authorization · hardening · biometrics · antivirus · classified · sneakernet · compartmentalization
State of being apart
- disconnectTo break a connection
- barrierObstruction preventing passage
- bufferProtective intermediate space
- partitionBarrier separating spaces
standalone · unconnected · quarantine · decoupled · segregation · enclave
Covert entry into organization
- exfiltrationCovert withdrawal of people/data
- compromiseAgreement through mutual sacrifice
- intrusionUnauthorized entry into space
- exploitNotable act or abuse
Polarizable electrical non-conductor
- capacitanceElectrical charge storage measure
- insulatorSubstance resisting energy flow
- arcCurved line segment
- flashoverSudden total combustion event
clearance · creepage · discharge · electrode · corona · ionization · switching · transformer
firewall
Network access control system
- cybersecurityProtection of digital systems
- encryptionConverting data into code
- confidentialityQuality of protecting secrets
authentication · authorization · hardening · biometrics · antivirus · classified · sneakernet · compartmentalization
separation
State of being apart
- disconnectTo break a connection
- barrierObstruction preventing passage
- bufferProtective intermediate space
partition · standalone · unconnected · quarantine · decoupled · segregation · enclave
infiltration
Covert entry into organization
- exfiltrationCovert withdrawal of people/data
- compromiseAgreement through mutual sacrifice
- intrusionUnauthorized entry into space
dielectric
Polarizable electrical non-conductor
- capacitanceElectrical charge storage measure
- insulatorSubstance resisting energy flow
- arcCurved line segment
flashover · clearance · creepage · discharge · electrode · corona · ionization · switching · transformer · relay
recording
Captured audio or video
airgapconnected
Joined to another
online · networked · wired · plugged in · always-on
airgapfirewall
Network access control system
VPN · DMZ · perimeter security · encryption · perimeter defense
air, gap, airy, gaps, airing, airtight, airless, airiness, gapped