This article explains how to encrypt your wireless network and how to check your router's encryption mode. Your router may support multiple wireless encryption methods, but if it's using an outdated method, attackers don't need to know your password to gain access to your system.
5 EASY Ways to Secure Your Home WiFi Network (and Protect Your Devices!)
With a little searching you should have no trouble finding the encryption settings for your router.
Log in to your router's admin console. To do this, access the router's IP address as a URL, such as http://192.168.1.1 or http://10.0.0.1. You will then be prompted to enter the router's username and password.
Find the wireless security settings. Your router may call this section Wireless Security, Wireless Network, or something similar. In this example, the settings are in Basic Setup > Wireless > Security.
