What is a Data Leak?
A Data leak occurs when data is accidentally leaked from within an organization, as opposed to a Data Breach, which is the result of data being stolen. Data leakage is usually the result of a mistake. For example: sending a document with sensitive or confidential information to the wrong email recipient, saving the data to a public cloud file share, or having data on an unlocked device in a public place for others to see.
See Also: What is the Dark Web?