UMID

Detects UMID patterns. This pattern is based on a Microsoft Purview built-in sensitive information type. Users already running Purview may prefer to enable the built-in SIT directly, or use this version as a starting point for customisation.

Type: regex
Engine: universal
Confidence: high
Confidence justification: High confidence: pattern has strong structural constraints (specific format, prefix, or character class restrictions) that significantly reduce false positive rates. Added context gating and exclusion rules improve precision and reduce incidental matches.
Detection quality: Verified
Jurisdictions: ph
Frameworks: ISO 27001, ISO 27701
Data categories: pii, government-id
Scope: narrow
Risk rating: 5
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible

Pattern

\b\d{4}-\d{7}-\d\b

Corroborative evidence keywords

UMID, unified multi-purpose, SSS, GSIS, ID number, identification, ID card, license, permit, registration, certificate, field, column, row, entry, record, value, form, register, database (+20 more)

Proximity: 300 characters

Should match

1234-5678901-2 — UMID number
9876-5432109-8 — Another UMID number
4567-8901234-5 — Valid UMID format

Should not match

1234-567890-2 — Too few digits in middle group
1234-5678901-23 — Too many digits in last group
template example placeholder record identifier — Template/sample context should be excluded even when anchor words are present

Known false positives

The dash-separated format (XXXX-XXXXXXX-X) is relatively specific. Mitigation: The structured format provides good validation. Keyword context further improves accuracy.
In multiple languages, similar terminology used in formal or administrative contexts (education, professional documentation) that does not constitute sensitive data collection. Mitigation: Layer with additional contextual signals such as structured identifiers, form fields, or database column headers to distinguish sensitive records from general references.

References

Philippines Unified Multi-Purpose ID Number entity definition - Microsoft Learn