Antitrust legal analyses

Identifies antitrust / competition-law legal analyses prepared as memos or advice: competition-law topic phrases inside a populated legal document header, with competition-specific analysis evidence at the high tier. These are commercially and legally sensitive analyses; the category is not personally identifiable information.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: Medium: competition-law phrases are common in training, news and published decisions, so enforcement requires a populated legal document header; 85 adds competition-analysis evidence.
Detection quality: Topic false positive
Jurisdictions: global
Regulations: Competition and Consumer Act 2010 (Cth)
Frameworks: ISO 27001
Data categories: legal, business
Scope: wide
Risk rating: 8
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?is)\b(?:antitrust\s+legal\s+analyses|antitrust\s+analysis|competition\s+law|market\s+dominance|price\s+fixing|merger\s+clearance|market\s+concentration|restraint\s+of\s+trade|competition\s+review)\b

Corroborative evidence keywords

antitrust legal analyses, antitrust, legal, analyses, corporate, governance

Proximity: 300 characters

Should match

PRIVILEGED & CONFIDENTIAL - antitrust analysis To: General Counsel From: Competition Partner, Harbour Legal Date: 12/08/2026 Re: Proposed acquisition of Coastline Freight Our combined share under the narrow market definition exceeds 42% and the ACCC is likely to find a substantial lessening of competition. — 85 - legal memo header with competition-analysis evidence
Competition law review - distributor rebate proposal Prepared by: Legal Services Date: 03/06/2026 The rebate proposal should be revised before launch. — 75 - two populated header fields without competition-analysis evidence
Antitrust analysis notes on regional freight pricing. — 65 discovery - topic phrase without a document header

Should not match

unrelated generic text without domain phrases — No relevant topic phrases present
board policy — Generic word pair should not match
Competition law compliance training: staff must never discuss prices with competitors; price fixing is a criminal cartel offence. — Training/guidance - no populated document header (65 at most)
Antitrust analysis memo To: ________ From: ________ Date: ________ Re: [matter name] — Blank memo template - placeholder header fields are rejected
The regulator's competition review found market concentration in groceries had increased, the report released on Monday said. — News item - no populated document header

Known false positives

Common words and phrases related to antitrust legal analyses 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.