Unless you vary your passwords often, it’s possible that some tech-savvy neighbors have figured out the password to your Wi-Fi home network, and they could be using it to download massive amounts of data, porn and pirated movies, or to snoop on your personal network. Instead of getting caught by the MPAA, it’s probably best to get this anti-Wi-Fi wallpaper to take care of business.
Read more @ Technabob
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Also keeps ur frequency clean for better throughput