DisclosureLens
Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedFinancial accountIdentity (basic)Government IDMediumContained

Z2 Capital Partners, LLC

bd_869858ba52be8361 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 28, 2026

Filed

May 6, 2026

To disclose

8 days

Affected

1state residents only

Confidence

64%
Full breach record for Z2 Capital Partners, LLC →

Z2 Capital Partners, LLC notified investors of a data security incident involving its outside counsel, Winston & Strawn. On March 25, 2026, a social engineering attack deceived a Winston employee into providing unauthorized access to their account. The actor accessed files related to Z2's work, containing investor PII including names, addresses, SSNs/Tax IDs, dates of birth, and bank routing/account numbers. Z2 was notified on April 28, 2026. The incident did not involve Z2's systems. Z2 is offering two years of complimentary credit monitoring via Experian.

Massachusetts clock✓ MA AG ≤30d8 days discovery → filing

Incident timeline

undetected · 34 days
discovery → filing · 8 days

Mar 25, 2026

Begins

Apr 28, 2026

Discovered

May 6, 2026

Filed

vs. sector median

7 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.