What is a "security breach" according to DSAC Annex B?

A "security breach" is defined as an incident that results in unauthorized access or disclosure of sensitive information. This definition captures the essence of what a breach entails: the compromise of data security which can lead to sensitive data—such as personal information, financial records, or confidential business information—being accessed by individuals or entities who do not have permission to view or handle that data.

Such breaches can occur through various means, including hacking, insider threats, or accidental disclosures, and they pose significant risks to organizations, including financial loss and reputational damage. The emphasis on unauthorized access highlights the critical issue of data protection and the need for effective security measures to prevent such incidents.

Other options do not align with the industry standard definition of a security breach. For instance, an event that guarantees data integrity doesn’t reflect a breach but rather an assurance of data protection. A successful phishing attack refers specifically to one method of breaching security but does not encompass the broader definition of all types of breaches. Similarly, a failure to comply with legal regulations may be related to security practices but does not inherently indicate that a breach has taken place. Therefore, the definition as stated provides a clear and accurate understanding of what constitutes a security breach in the context of DSAC Annex B