Question 25
Domain 2: Privacy Risk ManagementA smart-TV vendor aggregates viewing history across household devices to sell audience segments to advertisers. What is the BIGGEST privacy risk?
Correct answer: B
Explanation
Cross-device aggregation combines viewing history from multiple household devices into one profile, which can reveal sensitive household habits and preferences beyond what any single device shows. The biggest risk is that these audience segments are then sold and reused for advertising, creating "unexpected household profiles" that are more revealing than users expect.
Why each option is right or wrong
A. The TVs may need more storage space
B. Cross-device aggregation can create unexpected household profiles that are more revealing and more easily reused than users expect
The privacy harm arises under the broad definition of personal data and profiling in GDPR Articles 4(1) and 4(4): correlating viewing history from multiple devices in one home can infer a household’s habits, interests, and even sensitive inferences that no single device log would reveal. Because the resulting audience segments are then repurposed for advertising, the risk is not just collection but secondary use and disclosure of a richer, more intrusive profile than the users would reasonably anticipate.
C. Aggregation always makes data anonymous
D. Advertisers prefer text files over dashboards