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Surveillance continues creeping into our daily lives. Facial recognition cameras litter the streets; we are constantly monitored online, and it's rare to attend a social event without a camera being waved in our faces.

However, the prospect of such surveillance entering our homes can be even more disturbing. Have you ever noticed an unfamiliar device connecting to your home network? Or is your bandwidth decreasing rapidly? If someone is lurking on your Wi-Fi, that's a serious invasion of your privacy, not to mention unfair, as you are paying for a service.

Also: Your home Wi-Fi isn't nearly as private as it should be - 6 free ways to lock it down