They know, because user agent is not the only way to determine the OS with JavaScript.
So if you look at the user agent and JavaScript, and see a mismatch OS, you can infer the user is lying and use those parameters to block them.
They know, because user agent is not the only way to determine the OS with JavaScript.
So if you look at the user agent and JavaScript, and see a mismatch OS, you can infer the user is lying and use those parameters to block them.
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