personal data breach
B1CEFR level
28/100Rarity: fairly common
TechnicalRegister
A breach of security leading to the accidental or unlawful destruction, loss, alteration, unauthorised disclosure of, or access to, personal data.
The misdirected email amounted to a personal data breach because it exposed clients' contact details.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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