KRosh, not all spywares ask surfer's permission and even if you keep your system updated you can be a victim of them. High security settings will prevent the majority of them, but not all. There are many custom codes that can do nearly everything in your system without being noticed. The most advanced I have seen can copy part of surfer's registry and collect data that the site owner can use or sell to others. The surfer nevers find out.
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