DE.AE-04 estimates the impact and scope of adverse events to gauge their potential harm, using tools like SIEMs or manual analysis to assess affected assets and severity. This process refines initial estimates through review, ensuring a clear understanding of consequences like data loss or downtime. It informs prioritization of response efforts.

This subcategory aligns analysis with risk management by quantifying event effects, supporting resource allocation and escalation decisions. It ensures that the organization grasps the full extent of a threat, from isolated incidents to systemic risks. DE.AE-04 provides critical context for effective incident handling.