About Adobe - anyone concerned?

I guess you can tell that I don't know what I'm doing. A couple of days ago I received an advisory from Norton about Adobe player, then I received one about Adobe flash player. It kind of sounded urgent. Does anyone know abot this? Is there a phone number where Norton can be reached? If you know of one please let me know? I Googled it, but got nothing.

Thank you!  Danny S.