Multiple unknown devices connected to wifi

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@Tierra_B wrote:

I am having multiple unknown devices connected to my wifi. I thought my internet was secure and required the password to connect, but clearly it doesnt. What do i do to secure the internet so that no unwanted guest gets into my wifi?

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There have been many reports of this in other threads.  It has been posted  to turn off 'Advanced Security' as there might be problems with it (maybe with incorrect reporting).  See: https://forums.xfinity.com/t5/Xfinity-xFi/Unknown-New-Devices-Connecting/m-p/3325171#M16504