dead letter box

(redirected from dead drop)
Also found in: Dictionary, Thesaurus, Wikipedia.

dead letter box

[¦ded ′led·ər ‚bäks]
(communications)
A file for storing undeliverable messages in a data communications system, particularly a message switching system.
References in periodicals archive ?
In the Dead Drop Affiliate Program, the cookie duration is 120 days.
It is free to join the Dead Drop Affiliate Program.
The retrieve: The dead drop is a "do nothing" technique: Keep your rod still and move the lure only with the turn of the reel handle.
Conditions: The dead drop technique you can fish effectively over virtually any terrain by varying lure selection.
The 24-year-old Bahraini middleman has admitted using dead drops to pass on money and weapons to a notorious terrorist group engaged in a campaign of violence against security services.
The official versions emphasize aggressive FBI legwork in interrogating Hanssen and monitoring his dead drops, and what the FBI history describes as the bureau's "intensive physical and electronic surveillance of Ames during a 10-month investigation.
His story covers exotic and dangerous operations such as spy exchanges, dead drops, sleeper agents, recruiting and running moles, false identities, turning captured spies into double and triple agents, psychological warfare, disinformation, kidnapping, Romeo spies, and the never-ending quest for hard currency to pay off his West German agents.
There was no booking or waiting for the sub tropical Aqua Mundo pool and my daughter had the time of her life on the slides and water features from rapids and dead drops to snorkelling amongst coral reefs with a chance to see beautiful tropical fish and even sharks.
The defendant (writer) told his co-defendant (aged 21) to take weapons and place them in dead drops around the country for terrorists to pick up.
The investigations into the cases of Shahid Toumia and Ghazwan Shahin, both colonels, have revealed their alleged involvement in spying for Israel and passing on sensitive information about army and Hizbullah positions before, during and after the July 2006 war, relying on advanced communications equipment supplied to them by Israeli handlers and funding their operations through money received in dead drops by the Israelis.
He said he smuggled the drugs from Pakistan to Bahrain where two others helped deliver them to different locations for dead drops.
The illegals could operate as a kind of "stay-behind" network to handle dead drops, cash transfers and agent meetings.