Xfinity Security Alerts "known malicious" IP addresses

I am receiving daily alerts from my Xfinity network APP since installing my Tablo Quad DVR: “xFi Advanced Security blocked a security risk on Nuvyyo Inc Tabvlo HDTV, but additional action is needed.”

The warning explains Xfinity has denied access from an IP addresses labeled as a “known malicious” site located here in the US. The displayed IP addresses vary from each incident to the next. Any further information would be greatly appreciated.

We’ve seen some of these warnings in the past, and they’ve often turned out to be overly sensitive routers reacting to the Tablo’s remote access feature. Have you enabled the Tablo Connect feature in the Settings menu on your unit?

Thank you for your quick response: No, I’ve not set up the Connect feature yet.