HackingFinancial ServicesFinanceDelayed DiscoveryPIIGovernment IDIdentity (basic)MediumContained

Impac Mortgage Holdings, Inc.

bd_fb89e4e5ad806a50 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Mar 20, 2024

Filed

Apr 17, 2026

To disclose

25 months

Affected

339state residents only

Linked

4 filings

Confidence

65%

Full breach record for Impac Mortgage Holdings, Inc. →6 incidents on file

Impac Mortgage Holdings, Inc. notified Montana residents of a data breach involving unauthorized access to systems containing names and Social Security numbers. The unauthorized access occurred between February 21, 2024, and March 20, 2024. The company reported the incident to federal law enforcement and offered complimentary credit monitoring services to affected individuals.

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Incident timeline

undetected · 28 days

discovery → filing · 25 months / 758 days

Feb 21, 2024

Begins

Mar 20, 2024

Discovered

Apr 17, 2026

Filed

vs. sector median

+100 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Vermont State AGbd_12967a53eefe1d122026-04-17Verified
California State AGbd_450c61a65f466a372026-04-17Verified
New Hampshire State AGbd_d1441c9d42c18c922026-04-17Verified

Name: Impac Mortgage Holdings, Inc.
norm: impac mortgage
Domain: impaccompanies.com

Name: Impac Mortgage Holdings, Inc.
norm: impac mortgage
Domain: impaccompanies.com
Industry: Financial Servicesllm

Discovered: Mar 20, 2024
Breach occurred: Feb 21, 2024 – Mar 20, 2024
Undetected for: 28 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 27, 2026
Affected individuals: 339state-resident count only
Data types: PIIGovernment IDIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: reported this event to federal law enforcement
Initial access: exploit_public_facing

During the incident: Reported this event to federal law enforcement and supported their investigation
Offering you access to months of Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge through Cyberscout
Changes made: Added additional administrative safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 months(758 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Vermont State AGApr 17 · first

California State AGApr 17 · first

New Hampshire State AGApr 17 · first

Montana State AGApr 17 · first · this page

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.

Source URL: https://dojmt.gov/wp-content/uploads/2026/09/Consumer-notification-letter-9.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 17, 2026
Raw hash: ae44034e0729f60bb1d809754d7b35c626face771b3ae69f2accfbc6f5022d61

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityImpac Mortgage Holdings, Inc.

Victim entityImpac Mortgage Holdings, Inc.

Incidentdiscovered Mar 20, 2024

Stated responseReported this event to federal law enforcement and supported their investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov