The Internet is buzzing over news that 19-year-old Estonian "hacker" Peter Stokes got nabbed by the authorities and extradited to the U.S. on digital crime charges, mostly thanks to Microsoft Windows' built-in telemetry. The FBI seemingly subpoenaed Microsoft, which coughed up telemetry logs that contained both Stokes' GDID (Global Device Identifier) and websites he visited using his main Windows machine.
The existence of GDID isn't new by itself, as Windows telemetry's data collection has been extensively analyzed and reported on. It's also been known, and publicly explained by Microsoft, that the extended telemetry modes (Full/Optional instead of Required/Basic) can upload lists of URLs analyzed by SmartScreen and Defender, together with the GDID. In fact, using the Edge browser in this setup can even send every visited URL. The court documents do not reveal which exact mechanism triggered the telemetry upload, though.
