Some older WiFi devices like printers can only use lower levels of security as they were created before these new security updates existed. Why did some of my devices stop working when I updated my WiFi security? You can read more into the Apple recommended security by visiting Recommended settings for Wi-Fi routers and access points Your devices are still connected to the internet through your Shaw modems WiFi connection, but could cause a risk to your security if left. Does having the 'Weak Security' message mean that I'm not on the internet?