Only you would know.
Did you download and install it? https://constantguard.xfinity.com/products-and-services/norton-security-suite/
Hi Mdonlon58, although we do offer Norton protection with some of our internet packages and promotions only you would know if you're currently signed up. The link that (L1ngus) shared is a good place to start if you need to add Norton Security on your equipment or you can check your control panel on your computer to see if you already have it installed.