Eavesdropping

Eavesdropping is the act of secretly or stealthily listening to the private conversation or communications of others without their consent.[1] The practice is widely regarded as unethical, and in many jurisdictions is illegal.

Cardinals eavesdropping in the Vatican. A painting by Henri Adolphe Laissement, 1895
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Etymology

The verb eavesdrop is a back-formation from the noun eavesdropper ("a person who eavesdrops"), which was formed from the related noun eavesdrop ("the dripping of water from the eaves of a house; the ground on which such water falls").[2]

An eavesdropper was someone who would hang from the eave of a building so as to hear what is said within. The PBS documentaries Inside the Court of Henry VIII (April 8, 2015)[3] and Secrets of Henry VIII’s Palace (June 30, 2013) include segments that display and discuss "eavedrops", carved wooden figures Henry VIII had built into the eaves (overhanging edges of the beams in the ceiling) of Hampton Court to discourage unwanted gossip or dissension from the King's wishes and rule, to foment paranoia and fear,[3] and demonstrate that everything said there was being overheard; literally, that the walls had ears.[4]

Techniques

Eavesdropping vectors include telephone lines, cellular networks, email, and other methods of private instant messaging. VoIP communications software is also vulnerable to electronic eavesdropping via infections such as trojans.[1]

Network attacks

Network eavesdropping is a network layer attack that focuses on capturing small packets from the network transmitted by other computers and reading the data content in search of any type of information.[5] This type of network attack is generally one of the most effective as a lack of encryption services are used. It is also linked to the collection of metadata. Those who perform this type of attack are generally black-hat hackers; however, government agencies, such as the National Security Agency, have also been connected.

History
"Belly-buster" hand-crank audio drill, used during the late 1950s and early 1960s to drill holes into masonry for implanting audio devices
gollark: You have no power over bee disbursement activity.
gollark: Too bad.
gollark: It was approved by the PIERB.
gollark: They're generally too high-latency to use for much high speed processing.
gollark: I don't think it's reasonable to define your surroundings as part of you except the parts which are very involved in your cognitive processes.

See also

References
  1. Garner, p. 550
  2. "eavesdrop – Definition of eavesdrop in English by Oxford Dictionaries". Oxford Dictionaries – English.
  3. Inside the Court of Henry VIII. Public Broadcasting Service. April 8, 2016.
  4. Stollznow, Karen (August 7, 2014). "Eavesdropping: etymology, meaning, and some creepy little statues". KarenStollznow.com.
  5. "TeamMentor 3.5". vulnerabilities.teammentor.net. Retrieved 2019-09-27.
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