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.
Is LinkedIn Secretly Spying on Your Browser? This Invisible Code Sparks Controversy
By Rupert Blackwood
Investigative journalist based in Sheffield, focusing on technology's impact on society. Rupert specializes in cybercrime's effect on communities, from online fraud targeting elderly residents to cryptocurrency scams. His reporting examines social media manipulation, digital surveillance, and how criminal networks operate in cyberspace. With expertise in computer systems, he connects technical complexity with real-world consequences for ordinary people