Scenario: How should Ryan respond?

Ryan is shopping online.

A few days ago, Ryan was browsing online for discount airfares. He followed a pop-up ad to a website and entered his email address to receive special sale updates. Today he received an email telling him he would win some luggage plus qualify for a for a free 3-night trip to Cancun just by emailing back his customer profile information including credit card number.

Given his situation, what should Ryan do?