Blackmail is the crime of threatening to reveal embarrassing or damaging information about someone unless they give you money or do what you want. It uses fear and secrets as weapons.
From “black” plus “mail,” where “mail” once meant “rent” or “payment.” In 16th–17th century Scotland, it referred to illegal payments forced by threats, and later shifted to threats about reputation rather than physical safety.
Blackmail turns information into a kind of prison: the victim is trapped by the fear of others finding out. In the digital age, where everything can be copied and shared, the power of blackmail has multiplied.
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