secure line
Untappable phone connection
A secure line is a communication channel—telephone, radio, or digital connection—protected against interception or eavesdropping.
The term comes from military and intelligence contexts, where sensitive information requires encryption or other safeguards: Wait until we're on a secure line, Is this line secure?
In spy thrillers, characters frequently ask whether they can speak freely on the current connection.
- encryptedTransformed into cipher
- privateRestricted to certain parties
- classifiedRestricted from disclosure
- top secretHighest classification level
- need to knowRestricted information access basis
scrambled · wiretap · untraceable · confidential · cipher · phone · phone call · transmission · covert · black ops · surveillance · spy · dead drop · hotline · situation room · clearance · protocol · intercept
- confidentialconfidential, secret, private, classified, undisclosed
- transmissionbroadcast, broadcasting, transmitter, relay, signal
- data linksethernet, WiFi, satellite link, radio link, video link
- military communicationsradio, walkie-talkie, radio operators, signal flags, morse code
- anonymityanonymity, alias, pseudonym, incognito, hidden identity
- secret codescipher, secret code, secret codes, code word, password
secure lineopen line
Unoccupied communication path
open channel · party line · open circuit · open connection · landline
secure, line, securely, security, insecure, insecurity, securities, secures, secured