NCSC guidance warns against common SOC performance metrics, advocates time-to-detect/respond focus
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The UK National Cyber Security Centre (NCSC) highlighted that many conventional SOC performance metrics—such as ticket volume, closure time, or detection rule counts—are misleading and can incentivize counterproductive behavior. The agency emphasized that only metrics tied to timeliness of attack detection and response (TTD/TTR) reliably reflect SOC effectiveness. Misaligned metrics risk driving analysts toward rapid false-positive triage rather than meaningful threat investigation.
Timeline
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28.04.2026 11:30 1 articles · 3h ago
NCSC advises against misleading SOC metrics, promotes TTD/TTR focus
The UK National Cyber Security Centre (NCSC) has cautioned that common SOC performance indicators—such as ticket volume, closure time, or detection rule counts—can drive ineffective behavior and should not be used as primary effectiveness metrics. The agency emphasizes that only time-to-detect (TTD) and time-to-respond (TTR) reliably measure SOC performance and recommends using red/purple teaming to validate these metrics. NCSC also proposes alternative operational metrics to support SOC health monitoring without distorting analyst incentives.
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- No Metrics Are Better Than Bad Metrics in the SOC, Says NCSC — www.infosecurity-magazine.com — 28.04.2026 11:30
Information Snippets
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NCSC states that metrics like "number of tickets processed" or "time to close tickets" encourage analysts to prioritize false-positive triage over thorough threat investigation.
First reported: 28.04.2026 11:301 source, 1 articleShow sources
- No Metrics Are Better Than Bad Metrics in the SOC, Says NCSC — www.infosecurity-magazine.com — 28.04.2026 11:30
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NCSC warns that counting "number of detection rules" may lead to excessive rule creation, increasing false positives and reducing rule quality.
First reported: 28.04.2026 11:301 source, 1 articleShow sources
- No Metrics Are Better Than Bad Metrics in the SOC, Says NCSC — www.infosecurity-magazine.com — 28.04.2026 11:30
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NCSC identifies TTD/TTR (time to detect/time to respond) as the only reliable SOC effectiveness metrics, recommending red/purple teaming to assess performance.
First reported: 28.04.2026 11:301 source, 1 articleShow sources
- No Metrics Are Better Than Bad Metrics in the SOC, Says NCSC — www.infosecurity-magazine.com — 28.04.2026 11:30
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NCSC advises SOC managers to avoid using volume-based metrics (e.g., ticket counts) for internal or external reporting to prevent misaligned incentives.
First reported: 28.04.2026 11:301 source, 1 articleShow sources
- No Metrics Are Better Than Bad Metrics in the SOC, Says NCSC — www.infosecurity-magazine.com — 28.04.2026 11:30
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NCSC suggests several alternative metrics to support SOC health monitoring without distorting analyst behavior, including hypothesis-led hunting, false positive rate thresholds, and analyst expertise tracking.
First reported: 28.04.2026 11:301 source, 1 articleShow sources
- No Metrics Are Better Than Bad Metrics in the SOC, Says NCSC — www.infosecurity-magazine.com — 28.04.2026 11:30