To make you believe that the call is accurate and that they are who they say they are, attackers use data about the victim that is usually available online. Remember that every time you make an online order, you must fill in the brackets with your name, surname, email address, phone number, etc.; therefore, these are easy to find. When the potential victim believes the call is legitimate, because scammers can quickly achieve that, the chances of providing sensitive data over the phone will increase exponentially.