EU Passport Number
Detects EU passport number 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. This is a broad, multi-country SIT that aggregates passport number detection across EU member states.
- Type
- regex
- Engine
- universal
- Confidence
- medium
- Confidence justification
- Medium confidence: broad multi-country pattern that relies on corroborative keywords to reduce false positive rates across diverse passport formats. Added context gating and exclusion rules improve precision and reduce incidental matches.
- Detection quality
- Mixed
- Jurisdictions
- eu
- Regulations
- GDPR
- Frameworks
- ISO 27001, ISO 27701
- Data categories
- pii, government-id
- Scope
- wide
- Risk rating
- 8
- Platform compatibility
- Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible
Pattern
\b[A-Z]{1,2}\d{6,7}\b|\b\d{8,9}\bCorroborative evidence keywords
passport, travel document, passport number, eu passport, ID number, identification, ID card, license, permit, registration, certificate, data record, database record, record set, data extract, data export, database table, spreadsheet, data registry, registry entry (+14 more)
Proximity: 300 characters
Should match
AB1234567— Generic EU passport format with letter prefix and digitsXY987654— Generic EU passport format with letter prefix and digits123456789— Numeric-only format used by some EU member states
Should not match
ABCDEFGHIJ— All letters with no digits12345— Too short to be any EU passport numbertemplate example placeholder record identifier— Template/sample context should be excluded even when anchor words are present
Known false positives
- Generic alphanumeric sequences matching passport format in unrelated contexts. Mitigation: Require corroborative evidence keywords within the proximity window.