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Comment by toomim | Hacker News Reader

This doesn't run in Safari on an M1. I'm getting is error in the JS console:

    [Error] RuntimeError: Out of bounds memory access (evaluating 'this.wasm.exports.oscillateTreePLRU2')
       <?>.wasm-function[2] (memory_frame.html:78)
       wasm-stub
       oscillateTreePLRU2
       _timeL1 (memory_frame.html:78)
       leakMeTestSet (memory_frame.html:146)
       Global Code (memory_frame.html:165)

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Same error on my Intel MacBook running Safari

Yep same here, Safari on Intel Macbook. However, it runs perfectly in Chrome. More reason to use Safari I guess

While this POC may not reliably work on Safari, it is worth noting that from a defense perspective Safari is missing site-isolation (which Chrome, Edge, and soon Firefox all have). So if an attacker were to get this to work on Safari, the impact would be potentially much greater in terms of what could be stolen.

Did you select the "M1 CPU" checkbox? Just making sure

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