“Prime+Probe” is a cache side-channel attack method that can detect which cache sets are accessed by the target and infer valuable information. The researchers have successfully tested this technique on a wide range of platforms, including Apples recently introduced M1 chip. They shared their findings with browser providers and tech firms, including Intel, AMD, Apple, Chrome and Mozilla. Researchers evaluated their technique in hardened browser environments, including the Tor browser, DeterFox and Chrome Zero, and confirmed that none of these approaches defended against their attacks.”]
Source: https://www.cuinfosecurity.com/researchers-demonstrate-browser-based-side-channel-attack-a-16205