#security alert
- Alert — 1. Brisk, swift in movements, lively, agile, prompt, or dynamic; filled with physical or mental alertness. 2. An official signal, warning, state, or notification transmitted through a technical or security system to announce the imminent occurrence of a danger, emergency, or structural anomaly, requiring immediate vigilance or intervention measures. 3. (Military) A signal that places troops in a state of maximum operational readiness for combat.