breach

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breach

1. the act of a whale in breaking clear of the water
2. the breaking of sea waves on a shore or rock
3. an obsolete word for wound

data breach

An unauthorized dissemination of information. It may be due to an attack on the network or outright theft of paper documents, portable disks, USB drives or laptops. Sensitive information can also be found in trash cans when reports are carelessly discarded.