Is Sue's action of checking her brother's account balance without authorization considered a breach of privacy?

Sue's action of checking her brother's account balance without authorization is indeed considered a breach of privacy because it involves accessing someone else's personal financial information without their consent. Privacy laws and regulations are centered around the concept of informed consent, meaning that individuals have the right to control who accesses their personal data. In this scenario, Sue did not have permission from her brother to access his financial account, indicating a violation of his privacy rights.

This principle applies across various contexts, including familial relationships. Regardless of any familial ties, individuals have a right to their personal information being kept private, and unauthorized access can lead to unauthorized disclosures of sensitive information. Thus, the act of checking another person's account without permission demonstrates a disregard for their privacy, making it a breach by definition according to many privacy standards and legal frameworks.