Alert fatigue. SOC analysts process 500+ alerts per shift, and when the overwhelming majority are false positives, attention degrades and real threats get missed. The core design job is signal-over-noise: severity visualization, contextual grouping, and progressive disclosure that surfaces genuine threats above the routine. Close behind is time-critical decision-making — an analyst has seconds to judge an alert, so indicator data, historical context, and recommended actions have to live in a single view rather than behind navigation. Good security UX is measured in faster, more accurate triage, not aesthetics.