Because it connects to the internet, your modem can come down with a nasty case of malware or a virus just like your computer. Luckily, you can keep it safe with a few easy steps: Don’t use the default username and password for logging into your modem’s interface. Don’t use your modem brand, username, or password when you name your Wi-Fi network (this name is called an SSID). Do use encryption settings—preferably WPA2. Do keep your modem’s firmware updated.