Buyers be warned! There are a lot of apps, websites, and advertisements for Black Friday deals that are scams designed to rob you of your money or personal information.
If you are buying online, only buy from seller websites (like Amazon.com), or from local dealers on Craigslist (where you meet the seller in person).
Never enter your personal information if there is any doubt about the authenticity of an online store or deal.
Be wary of apps. Many are pretending to be coupon deals. Only use apps that are offered on Google Play or iTunes. Check out this article from NerdWallet for a good place to start: