What is the consequence of aggregation in information security?

The consequence of aggregation in information security primarily relates to higher classification of the combined information. When individual data elements that, when viewed in isolation, may not be sensitive, are aggregated, they can reveal more comprehensive insights that are classified at a higher sensitivity level. This is because the combined information can present a clearer picture of patterns or insights that may expose vulnerabilities or sensitive information.

For instance, individual records containing user data may not seem classified, but when several records are aggregated, they can provide significant insights that could include personally identifiable information (PII) or sensitive operational details. As a result, this aggregation elevates the classification level of data, which may necessitate enhanced security controls to protect this newly classified data.

The other options, while related to data handling and management, do not primarily focus on the specific consequence of aggregation as it pertains to information security. Data speed, redundancy, and accuracy are important aspects of data management, but they do not directly correlate with the concept of higher classification resulting from data aggregation.