Which is a common tactic used to manipulate people so they divulge confidential information?

Which is a common tactic used to manipulate people so they divulge confidential information?

• Social engineering
• Bait and switch
• Double cross
• Spamming 

EXPLANATION

Social engineering, in the context of information security, refers to psychological manipulation of people into performing actions or divulging confidential information. This differs from social engineering within the social sciences, which does not concern the divulging of confidential information. A type of confidence trick for the purpose of information gathering, fraud, or system access, it differs from a traditional "con" in that it is often one of many steps in a more complex fraud scheme.
 
It has also been defined as "any act that influences a person to take an action that may or may not be in their best interests.