The best way to protect a router from malicious software is not to turn it off when it is not in use, but to secure it with a strong password. Using a strong password — which should ideally contain a long mix of letters, numbers and symbols — will protect your router far better than turning it off and switching it back on with a default password that can be cracked easily (many users do not change the default username and password). Hackers can work very quickly and they will just strike when your router is turned on and unsecured, so turning it off does not mean your router is safe.
Can’t remember if you’ve ever changed the password on your Wi-Fi router at home? Make a note do to it tonight! Satay safe out there!