Criminals use social engineering tactics because it is usually easier to exploit your natural inclination to trust than it is to discover ways to hack your software. For example, it is much easier to fool someone into giving you their password than it is for you to try hacking their password (unless the password is really weak).
Famous hacker Kevin Mitnick helped popularize the term “social engineering” in the ‘90s, but the simple idea itself (tricking someone into doing something or divulging sensitive information) has been around for ages.
Email from a friend. If a criminal manages to hack or socially engineer one person’s email password they have access to that person’s contact list–and because most people use one password everywhere, they probably have access to that person’s social networking contacts as well.
Once the criminal has that email account under their control, they send emails to all the person’s contacts or leave messages on all their friend’s social pages, and possibly on the pages of the person’s friend’s friends.
Phishing attempts. Typically, a phisher sends an e-mail, IM, comment, or text message that appears to come from a legitimate, popular company, bank, school, or institution.
Baiting scenarios. These socially engineering schemes know that if you dangle something people want, many people will take the bait. These schemes are often found on Peer-to-Peer sites offering a download of something like a hot new movie, or music. But the schemes are also found on social networking sites, malicious websites you find through search results, and so on.
Or, the scheme may show up as an amazingly great deal on classified sites, auction sites, etc.. To allay your suspicion, you can see the seller has a good rating (all planned and crafted ahead of time).
People who take the bait may be infected with malicious software that can generate any number of new exploits against themselves and their contacts, may lose their money without receiving their purchased item, and, if they were foolish enough to pay with a check, may find their bank account empty.
Response to a question you never had. Criminals may pretend to be responding to your ’request for help’ from a company while also offering more help. They pick companies that millions of people use like a software company or bank. If you don’t use the product or service, you will ignore the email, phone call, or message, but if you do happen to use the service, there is a good chance you will respond because you probably do want help with a problem.
For example, even though you know you didn’t originally ask a question you probably a problem with your computer’s operating system and you seize on this opportunity to get it fixed. For free! The moment you respond you have bought the crook’s story, given them your trust and opened yourself up for exploitation.
The representative, who is actually a criminal, will need to ’authenticate you’, have you log into ’their system’ or, have you log into your computer and either give them remote access to your computer so they can ’fix’ it for you, or tell you the commands so you can fix it yourself with their help–where some of the commands they tell you to enter will open a way for the criminal to get back into your computer later.
Creating distrust. Some social engineering, is all about creating distrust, or starting conflicts; these are often carried out by people you know and who are angry with you, but it is also done by nasty people just trying to wreak havoc, people who want to first create distrust in your mind about others so they can then step in as a hero and gain your trust, or by extortionists who want to manipulate information and then threaten you with disclosure.
This form of social engineering often begins by gaining access to an email account or other communication account on an IM client, social network, chat, forum, etc. They accomplish this either by hacking, social engineering, or simply guessing really weak passwords.
There are literally thousands of variations to social engineering attacks. The only limit to the number of ways they can socially engineer users through this kind of exploit is the criminal’s imagination. And you may experience multiple forms of exploits in a single attack. Then the criminal is likely to sell your information to others so they too can run their exploits against you, your friends, your friends’ friends, and so on as criminals leverage people’s misplaced trust.