Others may give you an alert when new firmware is available.But if you have an older router and you've never updated the firmware, or if you haven't checked for updates in a while, you should do it ASAP.If you have a manual for it, it's time to dig it out.Or visit the website for the manufacturer and download the manual from there. If you bought a router recently, chances are its setup process prompted you to change the default password for accessing the settings.Double-check that it's on for your router, particularly if it's an older one.Some experts recommend that you also disable a feature called Wi-Fi Protected Setup, which makes it easy to connect devices to a router.
But if you've got an older router and you've never dived into its settings, you probably need to replace the default login and password, which in many routers is "admin" and "password". Some newer routers - particularly those that use mesh networking like Eero or Google Wi-Fi - update their built-in software automatically.
It's handy, but also an easy way for an authorized third party to get into your router, particularly if your password isn't strong.
Unless you really need to access your router when you're away from home, disable this.
(Note that some routers, particularly mesh-style models such as Eero, only allow access via a cloud-based system.
For these, make sure your password is a strong one.) Of course, you can do these only if you are in control of your router.