How to turn off news messages?

Hi all.  I'm running Norton Security 22.8 on Windows 7.  I just got a huge popup in the lower right corner of the screen about Yahoo's security breach and how to protect myself, etc.  I don't want to see these types of messages.  How do I disable them?  This message didn't appear to be the same kind as the small box that says "background tasks complete", which I have no problem with.  I just don't want to see the big news messages.