PII data-flow maps

Name: PII data-flow maps
Creator: TestPattern Community
License: https://opensource.org/licenses/MIT

Identifies pii data-flow maps patterns in security and access control contexts. Detects potential exposure of sensitive security information in Australian systems.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: category-aware structural regex with anchor and context constraints replaces phrase-only detection.
Detection quality: Mixed
Jurisdictions: au
Regulations: NDB Scheme (Cth), SOCI Act 2018 (Cth), TIA Act 1979 (Cth)
Frameworks: CIS Controls, DISP, ISO 27001, NIST CSF, PCI-DSS, SOC 2
Data categories: credentials, security
Scope: wide
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?is)\b(?:pii\s+data[\s-]+flow\s+maps|data\s+flow|pii\s+mapping|personal\s+information|data\s+lineage|data\s+inventory|privacy\s+impact|data\s+processing|data\s+subject|information\s+flow|data\s+architecture)\b

Corroborative evidence keywords

pii data-flow maps, pii, data, flow, maps, software, engineering, architecture

Proximity: 300 characters

Should match

pii data-flow maps — Primary topic phrase match
data flow — Case-insensitive topic phrase match
pii mapping — Alternative topic phrase match
personal information — Additional topic phrase match

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
source code config — Generic word pair from old broad template should not match

Known false positives

Authentication-related terminology in software documentation, security training materials, or system architecture descriptions without actual credentials. Mitigation: Require proximity to credential-specific patterns (API keys, connection strings, tokens) rather than general security terminology.
Code snippets and configuration examples containing credential-related keywords or placeholder values in developer documentation. Mitigation: Check for common placeholder patterns (example.com, localhost, 0000) and documentation file types to reduce false positives from technical writing.

References

https://www.cyber.gov.au/resources-business-and-government/essential-cyber-security/ism
https://www.cyber.gov.au/resources-business-and-government/essential-cyber-security/essential-eight
https://www.oaic.gov.au/privacy/australian-privacy-principles-guidelines/chapter-11-app-11-security-of-personal-information