THis has happened to me on two separate instances. Once on Dec 4th -6th then again on Dec 28-29, 2019. Luckliy I am a secondary user on the account and can still sign in on the primary user to gain control again. Last time, there were emails from Xfinity in my email advising my username was used to sign into Xfinity on three occasions; from Chrome, Firefox, firefox. All three emails were in the trash folder.
I called comcast/xfinity and they said this is the first they heard of this happening. Supposedly, they are going to look into it. So frustrating.
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