Your inbox might have pieces purporting to be sent by major retailors such as Target, Walmart, Home Depot, Costco. Look for signs that the email is fake, such as the From line does not look what you would expect to see considering the retailor. Above all don't click on any link in the email thoughtlessly. If you must go to the retailor's website, enter its address in the browser's address box directly.
If you get caught, there may now be malware stealing your sensitive data.
If you get caught, there may now be malware stealing your sensitive data.