A security breach that results in customer data theft primarily highlights which cybersecurity aspect?

The situation described, where a security breach leads to the theft of customer data, primarily highlights data confidentiality. Data confidentiality refers to the protection of sensitive information from unauthorized access and disclosure. When customer data is compromised, it indicates that measures to ensure that only authorized individuals can view that data were inadequate or breached.

This breach emphasizes the importance of implementing stringent access controls, encryption, and other security practices aimed at safeguarding sensitive information. The loss of confidentiality can lead to serious repercussions, including financial loss for the affected individuals and reputational damage for the company involved. Ensuring data confidentiality is fundamental to maintaining trust between a company and its customers, as well as fulfilling legal and regulatory obligations regarding the protection of personal information.