Why does my net work from Optimum show that it’s not a secure router
How do I make my router secure
iPhone 5, iOS 10
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Your iPhone is notifying you that the Wi-Fi Network that it is connected to does not have adequate security by today's standards. If you are interested in improving the security of your Wi-Fi then you can log into the Router and change the security settings to WPA2 (AES) in the least. If you do not know how to log into your Wi-Fi Router then please refer to the owner's manual. If you do not have the owner's manual the please contact the support team of the Router's manufacturer / provider.
More information here ➔ Recommended Settings for Wi-Fi Routers & Access Points.
Axel F.