The statement reflects an organization's difficulty in operationalizing privacy safeguards in response to a known threat scenario. According to the DSCI Assessment Framework for Privacy (DAF-P©), "Capability" refers to an organization’s ability to implement and maintain technical, procedural, and administrative controls effectively.

A struggling security team in configuring rules for a known leakage scenario indicates a gap in technical expertise or resources, which directly correlates with a lack of "Capability." This category assesses how prepared an organization is in deploying privacy controls, managing incidents, and aligning security technologies with privacy requirements.

Thus, the challenge in configuring protective rules is best categorized under "Capability" as it denotes a functional inadequacy in handling privacy-related incidents.