Before you spend money on that “Shark-approved” miracle invention, weight loss product, or keto diet pill, are you sure it’s really been through the Tank ? Really sure? Scammers are using fake Shark Tank celebrity testimonials and endorsements — complete with doctored photos and videos — to generate buzz and profits. Before you click and buy, follow this advice and check it out. Here’s what to do if you’re wondering whether something is Shark...