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Is LinkedIn Secretly Spying on Your Browser? This Invisible Code Sparks Controversy

July 11, 2026Carlos Mendoza1 мин

LinkedIn has implemented a mechanism it calls "Spectroscopy," a name that evokes the idea of remote observation. This system involves a substantial 2.7-megabyte JavaScript block that runs as soon as a page loads. It reportedly dispatches up to 6,222 simultaneous requests to your browser, with each query targeting the unique identifier of a specific browser extension. A positive response confirms the extension's presence, while an absence of a response typically indicates it is not installed. This method has sparked debate regarding user privacy and the extent of browser surveillance.