Virus alert

A site you visited has given itself permission to send push notifications. Everything you're seeing is nothing but a scam.

Open Safari's preferences. Click on the Websites tab and then scroll down to Notifications. Clear any entries in the right hand window. You might find something similar in the Pop-up Windows heading below that. Block any you don't recognize.

Then if you want, uncheck the box below as shown here.

I personally can't think of any reason why I would ever want any website to push notices to me.

It's a scam/intrusive ad, just ignore it

ram7620 wrote:

I keep getting a virus alert that looks like it is coming from the Mac system preferences. When I click on it, it wants me to get McAfree to resolve issues. Is this legit?

No it is not legit. It is a scam attempt.