Reconnaissance
Noun · Security & Infosec
Definitions
The process of gathering information about a target's people, infrastructure, technologies, or defenses in preparation for a later attack or assessment. Reconnaissance can be passive, such as OSINT, or active, such as scanning and direct probing.
In plain English: Gathering information about a target before an attack or security test.
Example: "The campaign began with reconnaissance against the company's exposed domains, employee naming patterns, and third-party login portals."