Activist defense plans

Identifies board and adviser plans for defending against shareholder activists or hostile bids (activist defence, proxy fight, poison pill, takeover defence, white knight) prepared as populated board papers or memos. Commercial and legal information, not personally identifiable information.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: Medium: takeover-defence vocabulary is common in news, coursework and governance training, so enforcement requires a populated board-paper/memo header; 85 adds campaign-response evidence.
Detection quality: Topic false positive
Jurisdictions: global
Regulations: Corporations Act 2001 (Cth)
Frameworks: ISO 27001
Data categories: business, legal
Scope: wide
Risk rating: 8
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?is)\b(?:activist\s+defen[cs]e|shareholder\s+activis[mt]|poison\s+pill|proxy\s+(?:fight|contest)|hostile\s+takeover|board\s+defen[cs]e|shareholder\s+rights\s+plan|activist\s+(?:investor|campaign)|takeover\s+defen[cs]e|white\s+knight)\b

Corroborative evidence keywords

activist defense plans, activist, defense, plans, mergers, acquisitions, strategy, DISP, DSPF, DSGL, ITAR, Defence and Strategic Goods, export control, controlled technology, defence industry security, DISP member, CASG, Defence Materiel, data record, database record (+22 more)

Proximity: 300 characters

Should match

STRICTLY CONFIDENTIAL - activist defence plan To: Board of Directors From: Company Secretary Date: 12/08/2026 Subject: Response to Kestrel Capital requisition Kestrel holds a 6.1% stake and has served a section 249D requisition for an EGM; the proxy solicitor recommends engaging the top 20 holders before any board spill vote. — 85 - board paper header with requisition/proxy-solicitor evidence
Shareholder activism response - working notes Prepared by: Investor Relations Date: 03/06/2026 Key messages for the chair are being finalised. — 75 - two populated header fields without campaign-response evidence
Notes on the poison pill option for the board retreat. — 65 discovery - topic phrase without a document header

Should not match

unrelated generic text without domain phrases — No relevant topic phrases present
merger fundraising — Generic word pair should not match
Governance course notes: a poison pill is a takeover defence used mainly in the United States; Australian law restricts frustrating action. — Coursework/guidance - no populated header (65 at most)
Activist defence plan To: ________ From: ________ Date: ________ Subject: [activist name] — Blank board-paper template - placeholder header fields are rejected
A hedge fund launched a proxy fight at the miner on Monday, seeking two board seats, the newspaper reported. — News item - no populated header

Known false positives

Common words and phrases related to activist defense plans 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.