A modification attack directly impacts data accuracy, as it involves unauthorized changes or alterations to data. When data is modified, it can lead to incorrect information being stored or processed, which can have significant consequences for decision-making, data integrity, and overall system reliability.
In this context, data accuracy is crucial because it ensures that the information being used reflects true and correct values. If an attacker gains access and alters data, users receive misleading or erroneous outputs, which can compromise various operations or assessments relying on that data.
Other aspects such as data availability, confidentiality, and possession are not primarily affected by a modification attack. While they are important elements of information security, a modification attack focuses on altering existing data rather than preventing access or maintaining its privacy or ownership.