Do not click on pop-ups stating “Congratulations, you’re today’s lucky visitor”. These pop-up ads may state you have won a chance at a gift card, an iPhone or something similar. If you click the pop-up, it will take you to a website with claims from people stating they received their freebie and you will be asked to provide your personal information to also receive the freebie. In some cases these are marketing scams but they could also be more harmful phishing attempts.
In many cases people have received this pop-up while browsing Facebook on an iPhone or iPad but customers with any type of tablet, phone or desktop should be wary of pop-ups ads offering anything free.