A breach of data happens when your data is disclosed to a third party without your knowledge or consent.
If your data was compromised, the organisation responsible for the breach must contact and advise you that there has been a data breach. If the organisation did not notify you or if you believe that they lost or private information, you should request for copies of all the information they hold on you and specifically ask the organisation if there has been a breach of your data.
The following are examples of how a Data Breach can occur:
Deliberately by a hacker's efforts
A hacker targets a specific company in order to steal personal data and use them for their own gains.