What best defines a data breach?

• A. A routine backup of data
• B. An intentional data wipe
• C. A scheduled software update
• D. An incident where unauthorized parties access sensitive information, often leading to misuse or exposure

Answer: (D)

A data breach is an incident where unauthorized parties access sensitive information, often leading to misuse or exposure. This focus on who can access the data and the potential consequences distinguishes it from routine backups (legitimate copies), deliberate data wipes (destruction of data), or scheduled software updates (maintenance). In practice, a breach happens when someone without permission—such as a hacker or insider—gains access to data like customer records or financial information, potentially leading to identity theft or fraud.