Norton and Facebook intrusion

Facebook intrusion. Don't know where to report it to Norton. Yesterday someone sent me a "like post" notification. I clicked on it and it took me to my comment; however when I clicked on the "notifier" their name changed and blue circle with line through it appeared at that page and also on my home page where it changed some of my friends profile pictures to the blue circle. MY CONTINUED OBSERVATIONS ARE AS FOLLOWS: This got through my https. address and my Norton. I closed facebook and went offline only to find a McAfee security scan loaded. I will always stay with Norton, regardless of what others try to do to me. Yes, I took this very personaly. I changed my password there and on email also. I am old, disabled and my computer is my link to the world.  ANYONE ELSE HAVE A PROBLEM LIKE THIS? Thanks Norton!

 

 

[edit: Clarified subject.]