DisclosureLens
HackingFinancial ServicesFinanceCustomer Data InvolvedIdentity (basic)Financial accountFinancial credentialsMediumResolved

THORNBURG INVESTMENT MANAGEMENT, INC.

bd_ca2dc835fc9b5f49 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 13, 2021

Filed

Feb 3, 2022

To disclose

42 weeks

Affected · nationwide

3,99610 in this filing

Linked

6 filings

Confidence

50%
Full breach record for THORNBURG INVESTMENT MANAGEMENT, INC. →

Thornburg Investment Management, Inc. reported an external system breach (hacking) that occurred between March 29, 2021, and April 30, 2021. The breach was discovered on April 13, 2021. The compromised information includes names or other personal identifiers in combination with financial account numbers or credit/debit card numbers, along with their security codes, access codes, passwords, or PINs. A total of 3,996 individuals were affected, including 10 residents of Maine. The company offered 12 months of identity and credit monitoring services through Equifax to those affected.

Maine clockDiscovered Apr 13, 2021 → Filed with AG Feb 3, 2022296d ⏱ ME AG >30d42 weeks discovery → filing
⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 15 days
discovery → filing · 42 weeks / 296 days

Mar 29, 2021

Begins

Apr 13, 2021

Discovered

Feb 3, 2022

Filed

vs. sector median

+34 wks slower

This filing is one of 6 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Show 1 more filing ↓up to 27d gap

Filing propagation · 6 filings · 5 states

View merged incident ↗
Indiana State AGJan 7 · first
Massachusetts State AGJan 7 · first
Montana State AGJan 7 · first
Maine State AGJan 7 · first
New Hampshire State AG+5d
Maine State AG+27d · this page

Pattern: first filing Jan 7 (IN), last Feb 3 (ME) — a 27-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.