How do I secure my WiFi?

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You want to make sure that firmware is up-to-date. Especially in light of recent exploits, it’s crucial that the software that runs your wireless router or AP is up-to-date. Should you not be able to get up-to-date firmware due to the age of the device, purchase a newer wireless router or AP.
You're imited to the use of pre-shared key security in consumer grade wireless. What you can do is make sure that you use a complex passphrase of sufficient length. Utilize WPA2 AES encryption.
You can also utilize what is known as MAC address filtering. This ensures that only known devices are allowed onto the network, so that even if an attacker knew your password, the unknown device would not be allowed to connect.
Do you want to secure your WiFi connection to a hotspot?
 Use a VPN server; especially in a publicly accessible hotspot.
Do you want to secure your own hotspot?
  1. Change your router’s default login and password immediately.
  2. Update your firmware and keep it updated.
  3. Choose WPA or greater encryption and require a login or key.
  4. Do not broadcast your SSID.
  5. Disable any guest networking options.
  6. Do NOT enable remote management unless you’re sure of what you’re doing.
*Follow industry best practices for all your online activities. Nothing will protect you if you like to click on those unsolicited links or download anything from anywhere.

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