Geolocation is the process of estimating a device’s physical position using signals such as GPS, Wi-Fi, Bluetooth, cellular networks, and app permissions. It can be precise to a room or approximate to a neighborhood, depending on the available signals and signal quality.
In cyber security, geolocation matters because location data can reveal presence, movement, routines, and associations. Attackers may harvest it from mobile apps, ad networks, data brokers, or exposed telemetry to track people, infer home and work locations, or support phishing and physical targeting. Defenders use the same concept to spot impossible travel, detect suspicious logins, and enforce location-based access policies. To reduce exposure, organizations limit location permissions, disable unnecessary radios, and treat location traces as sensitive data.