Marriage certificate number

Identifies documents containing references to marriage certificate number in international contexts. This information type is classified as personally identifiable information under applicable data protection regulations.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: category-aware structural regex with anchor and context constraints replaces phrase-only detection. Added context gating and exclusion rules improve precision and reduce incidental matches.
Detection quality: Topic verified
Jurisdictions: global
Regulations: GDPR, Anti-Money Laundering and Counter-Terrorism Financing Act 2006 (Cth), Information Privacy Act 2009 (Qld), NDB Scheme (Cth), Privacy Act 1988 (Cth)
Frameworks: ISO 27001, ISO 27701
Data categories: government-id, pii
Scope: wide
Risk rating: 5
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?is)\b(?:marriage\s+certificate\s+number|marriage\s+certificate|marriage\s+registration|certificate\s+of\s+marriage|civil\s+registration|vital\s+records|certificate\s+number|nuptial\s+registration|births\s+deaths\s+marriages|wedding\s+certificate)\b

Corroborative evidence keywords

marriage certificate number, marriage, certificate, number, government, ids, civil, status, api key, api_key, apikey, access key, access token, auth token, authorization, bearer, conn str, connection string, connectionstring, cookie (+41 more)

Proximity: 300 characters

Should match

marriage certificate number — Primary topic phrase match
marriage certificate — Case-insensitive topic phrase match
marriage registration — Alternative topic phrase match
certificate of marriage — Additional topic phrase match
Marriage certificate number: Recorded Name: Avery Teston Date of birth: 14/02/1988 — Populated attribute field with a linked record field (85 tier)

Should not match

unrelated generic text without domain phrases — No relevant topic phrases present
placeholder value 12345 — Random text should not match topic-specific regex
Marriage certificate number: Name: Date of birth: — Empty form: the heading and field labels without values must not corroborate themselves (discovery only)
Policy guidance: this procedure explains how records about marriage certificate number are handled, who may access them and how long they are kept. It contains no records about any person or system. — Policy guidance naming the topic without any record (discovery only)
Marriage certificate number: Name: Avery Teston — Record with the attribute label but no value: the label must not corroborate itself (discovery only)

Known false positives

Common words and phrases related to marriage certificate number appearing in policy documents, training materials, HR templates, or compliance guidelines without actual personal data. Mitigation: Require corroborative evidence keywords within the proximity window to confirm sensitive data context rather than general discussion.
In English (as the primary international business language), 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.
High-frequency pattern matches in large document corpora due to broad regex anchors. Expected match rate is significantly higher than specific identifier patterns. Mitigation: Tune confidence thresholds for bulk scanning. Consider using this pattern primarily as a pre-filter with secondary validation.