Αστυνομική Ταυτότητα

Detects Αστυνομική Ταυτότητα 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. Added context gating and exclusion rules improve precision and reduce incidental matches.

Detection quality

Verified

Jurisdictions

eu, gr

Regulations

BDSG, CNIL / LIL, GDPR

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[A-Z]{2}\d{6}\b

Corroborative evidence keywords

ταυτότητα, identity card, αστυνομική, ID number, identification, ID card, license, permit, registration, certificate, field, column, row, entry, record, value, form, register, database, extract (+19 more)

Proximity: 300 characters

Should match

• AB123456 — Greek ID with two-letter prefix
• XY987654 — Another Greek ID format
• CD456789 — Valid format Greek ID

Should not match

• A1234567 — Only one letter prefix
• ABC12345 — Three-letter prefix with five digits
• template example placeholder record identifier — Template/sample context should be excluded even when anchor words are present

Known false positives

• Two uppercase letters followed by six digits may match airport codes with flight numbers, product codes, or other alphanumeric references. Mitigation: Require corroborative evidence keywords in Greek or English 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

• Greece National ID Card entity definition - Microsoft Learn