Security Risk!

Norton 360 Premium,  Windows 10 

This is the second message in 3 days. I wake up with the message "Security Risk !" (see picture)  It's telling me that there is a "suspicious amount of outbound traffic"  as well as a message that a mobile unlock request was made. This was while I was asleep. The first time I used Norton Power Eraser as directed and followed up with a full system scan. Nothing was found. I got the second message again this morning. This happening while I'm asleep leads me to believe that someone is trying to hack me. Can this be a glitch in the Norton software or am I vulnerable to being hacked? I'd like to find a solution soon to avoid a problem. What should I do ?  Thank you for any help. 

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