As the city of Houston prepares to host the 2023 NCAA Men’s Final Four from March 31 through April 3, Homeland Security Investigations (HSI) is cautioning fans to be on the lookout for fake NCAA merchandise and tickets to Final Four games.

Before you click “add to cart” or “buy now,” you should always read customer reviews to see what others are saying about the products you want. If you fall for a fake review, you could be stuck with a dud of an item. Chandra Steele of PCMag says you have to dive deeper and really read the reviews. There are some browser extensions and websites that will scout out fake reviews for you. Fakespot looks at both the review and the reviewer, analyzing language, previous reviews, and purchase history to determine trustworthiness.