Australian Deposit Account Reference

Identifies references to Australian consumer deposit account numbers in financial and compliance documents. Uses structural anchors with proximity constraints.

Type

regex

Engine

boost_regex

Confidence

medium

Confidence justification

Medium confidence: structural anchors constrain context but broad field labels can match non-financial identifiers. Corroborative keywords improve precision. Context label evidence plus explicit template/example exclusion improves precision for high-risk identifiers. Added context gating and exclusion rules improve precision and reduce incidental matches.

Detection quality

Mixed

Jurisdictions

au

Regulations

AML/CTF Act (Cth), IPA 2009 (Qld), NDB Scheme (Cth), Privacy Act 1988 (Cth), SOCI Act 2018 (Cth)

Frameworks

ISO 27001, ISO 27701, PCI-DSS, SOC 2

Data categories

financial

Scope

wide

Risk rating

5

Platform compatibility

Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?is)\b(?:deposit\s+account|account\s+(?:number|no\.?|#|ref(?:erence)?)|bank\s+account|savings\s+account|cheque\s+account|transaction\s+account)\b(?:\s{0,10}[:#=;])?\s{0,80}\b[A-Z0-9][A-Z0-9\-/]{4,24}\b

Corroborative evidence keywords

deposit account, bank account number, BSB, account number, savings account, cheque account, transaction account, direct debit, bank account, account no, [object Object], routing number, sort code, IBAN, SWIFT, [object Object], data record, database record, record set, data extract (+19 more)

Proximity: 300 characters

Should match

• account number A12345678 — Account number anchor with alphanumeric account
• deposit account B062000ACC12 — Deposit account anchor followed by financial reference code
• bank account X1234-5678/90 — Bank account anchor with identifier containing hyphens and slashes
• account number: 12345678 — Colon delimiter between label and value now matches
• deposit account = ACC-2244-77 — Equals delimiter between label and value now matches
• bank account; X12345678 — Semicolon delimiter between label and value now matches
• account ref # ACC998877 — Hash delimiter between label and value now matches
• account number: 12345678 — Line break after a delimited label now matches

Should not match

• unrelated generic text — No relevant context
• number A12345678 — Bare 'number' anchor no longer matches without account context
• the quick brown fox — No structural anchor or identifier
• reference B062000ACC12 — Bare 'reference' anchor no longer matches without account context

Known false positives

• Financial terminology in published reports or textbooks without actual data. Mitigation: Require corroborative keywords in proximity.

Collections

• Australian Public Sector Tuned Identifiers