New Delhi, Nov. 26 -- While legitimate sellers are present on social media sites; such as TikTok and Facebook; the sheer number of scams I've observed compels me to advise users to be cautious this Black Friday. Shoppers must be especially wary of "free" offers that come with a price. These scams offer everything from free diet pills and "performance enhancers" to video games; even headsets and gift cards. They use fake celebrity endorsements and fake news articles to dupe unsuspecting shoppers; who then provide credit card details in exchange for "free" goods. This subjects the user to recurring subscription fees or other types of non-refundable charges.

Another popular shopping scam that will rear its ugly head this holiday season invo...