The most prevalent type of social engineering attack is conducted by phone. The hacker call the victim using phone as a service company or bank employ etc… , than the victim well believe that then hacker can get information how can access for victim account. For example let say the hacker is person A and the victim is person B, A well call B Claiming that he is an employee at the bank and wants information about the victim providing a fun service, when B give A a information about him than A well Access to B account than can stall his money.