A walk-in agent is an individual who voluntarily offers to conduct

espionage Espionage, spying, or intelligence gathering is the act of obtaining secret or confidential information (intelligence) from non-disclosed sources or divulging of the same without the permission of the holder of the information for a tangibl ...

. Specifically, a "walk-in" is an agent or a

mole Mole (or Molé) may refer to: Animals * Mole (animal) or "true mole", mammals in the family Talpidae, found in Eurasia and North America * Golden moles, southern African mammals in the family Chrysochloridae, similar to but unrelated to Talpida ...

of a government who literally walks into an

embassy A diplomatic mission or foreign mission is a group of people from a state or organization present in another state to represent the sending state or organization officially in the receiving or host state. In practice, the phrase usually deno ...

intelligence agency An intelligence agency is a government agency responsible for the collection, Intelligence analysis, analysis, and exploitation of information in support of law enforcement, national security, military, public safety, and foreign policy objective ...

without prior contact or recruitment.

References

Spies by role {{poli-stub