Cédula de Identidad

Detects Cédula de Identidad 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: medium
Confidence justification: Medium confidence: pattern has structural constraints but corroborative keywords are recommended to reduce false positive rates. Context label evidence plus explicit template/example exclusion improves precision for high-risk identifiers.
Detection quality: Verified
Jurisdictions: ec
Regulations: LOPDP (EC)
Frameworks: ISO 27001, ISO 27701
Data categories: pii, government-id
Scope: narrow
Risk rating: 9
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible

Pattern

\b\d{10}\b

Corroborative evidence keywords

cédula, identidad, identification, ID number, ID card, license, permit, registration, certificate

Proximity: 300 characters

Should match

1712345678 — Ecuadorian ID from Pichincha province
912345678 — Ecuadorian ID from Guayas province
112345678 — Ecuadorian ID from Azuay province

Should not match

123456789 — Too few digits (9)
12345678901 — Too many digits (11)
sample template placeholder number 123456789 — Template/sample context should be excluded even when numeric-like values appear

Known false positives

Ten-digit numeric sequences appear in phone numbers, account numbers, and other non-identity contexts. Mitigation: Require corroborative evidence keywords such as "cédula de identidad" within the proximity window.
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

Ecuador Unique Identification Number entity definition - Microsoft Learn