Social Engineering, which is also called "social hacking" and "social cracking", is the way to steal important security information from the network user or manager, such as password and other personal information. The ways of theft are eavesdropping on the conversation and peep at the information in the computer. This deed doesn't injure the computer itself, however, it hurts people's feeling and damage companies. The popular modus operandi is this; Stand behind the person when he/she is typing password, and steal it by watching. Furthermore, Forage the garbage after someone throw away the important personal information or password. Moreover, this method is used for "Oreore sagi", which is the fraud that someone pretends the relative of someone, and deceives the relative to get money, it became one of big social problem in Japan. The way of it is pretending friend or friend's family, and ask the address and phone number of classmates.
These swindles really happen around us, so what we should do is not telling our personal information to other people especially if I don't a person who asked me to tell the information. It is not exception for the companies, they need to strengthen the security system.