I don't get any alerts but it's probably because I'm using Google Chrome with the following extensions:
Pop up blocker
Most website are tracking you, force you to see ads, show content you don't want, popup alerts etc. Are you using Cox Internet Security Suite or something? Yeah, what kind of alerts are you talking about?
We value our customers trust and privacy and a Cox Browser Alert is not a phishing attempt. For more information of our browser alerts, you may check out our website for more information: www.cox.com/.../about-cox-browser-alerts.html.