You make an online purchase of a hooded sweatshirt with the logo of the Dallas cowboys the next time you log on your screen has a banner ad for the Dallas cowboys hats and shirts this banner ad is most likely the result of what data mining a coincidence the internet crime of theft of private information or encryption software

This is most likely the result of data mining. Data mining is a process of analyzing large amounts of data to discover patterns, trends, and insights, which can then be used for targeted advertising. In this case, the online store where you made the purchase likely shared your information with companies that specialize in targeted advertising, which is why you are now seeing ads for related products. It is not a coincidence, internet crime, or encryption software at play here.