Google is surprisingly on the forefront of security (I guess we should expect this). There's so much that Google does to be ahead of the curve and to be/stay ahead of attackers. CPU mining in your browser by infected sites has been a common attack lately. There's been plenty of miner blockers lately, but this is overall a good thing. If you still want to mine crypto, get a different miner source. There's plenty of info on the internet.
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