You can read the paper HERE and try out a POC that creates a cache histogram on your GPU below.
You're most likely to make it work on Chrome, Chrome Canary or Chromium with a dedicated AMD/NVIDIA GPU.
If you're on mobile, chances are WebGPU support is either not available for you, or if it is, the POC will time out (The browser might even hang or crash. We've also seen phone crashes, click at your own risk.).
If either pair of hit/miss distributions is clearly separable, your device is susceptible to very basic cache attacks.
Would you like to submit the data shown below to add to our collection?