Network Timing side-channels have been present on the web since its inception 12. These attacks have had different levels of impact over time, gaining new attention when browsers started shipping high-precision timers like performance.now(). To obtain timing measurements, attackers must use a clock, either an implicit or an explicit one. These clocks are usually interchangeable for the purposes of XS-Leaks and only vary in accuracy and availability. For simplicity, this article assumes the us...
