HackingFinancial ServicesFinanceData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHealth (basic)MediumContained

Sentinel Security Life Insurance Company

bd_dec7091fc45e2ef3 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 15, 2025

Filed

Dec 30, 2025

To disclose

37 weeks

Affected

304state residents only

Linked

5 filings

Confidence

65%

Full breach record for Sentinel Security Life Insurance Company →

Sentinel Security Life Insurance Company and Atlantic Coast Life Insurance Company notified individuals of a data breach where unauthorized actors accessed systems between April 7 and April 15, 2025. The incident exposed names, SSNs, financial account info, DOBs, and medical/health insurance data. Notices were sent on December 30, 2025, offering credit monitoring.

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Incident timeline

undetected · 8 days

discovery → filing · 37 weeks / 259 days

Apr 7, 2025

Begins

Apr 15, 2025

Discovered

Dec 30, 2025

Filed

vs. sector median

+29 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Nebraska State AGbd_379fab7713473e3e2025-12-30Verified
California State AGbd_7dc606c04064a1cc2025-12-30Candidate
New Hampshire State AGbd_cfd3298946a9660a2025-12-30Verified
Iowa State AGbd_ea0923490f6560062025-12-30Verified

Name: Sentinel Security Life Insurance Company
norm: sentinel security life insurance

Name: Sentinel Security Life Insurance Company
norm: sentinel security life insurance
Industry: Financial Servicesllm

Discovered: Apr 15, 2025
Breach occurred: Apr 7, 2025 – Apr 15, 2025
Undetected for: 8 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 30, 2025
Affected individuals: 304state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: notified federal law enforcementnotifying applicable regulatory authorities

During the incident: Took steps to secure their environment
Launched an investigation to determine the nature and scope of the incident
Reviewing their policies, procedures, and processes related to the storage of, and access to, personal information
Notified federal law enforcement
Notifying applicable regulatory authorities
Offered complimentary access to credit monitoring and identity restoration services through IDX
Changes made: Reviewing their policies, procedures, and processes related to the storage of, and access to, personal information to reduce the likelihood of a similar future incident
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 37 weeks(259 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Nebraska State AGDec 30 · first

California State AGDec 30 · first

New Hampshire State AGDec 30 · first

Iowa State AGDec 30 · first

Montana State AGDec 30 · 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/2026/03/Consumer-notification-letter-20.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 30, 2025
Raw hash: 2cec4eed452c566e9e6caf3e5e8358be30210f2e6e08e009f8b3be9b307d4041

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entitySentinel Security Life Insurance Company

Victim entitySentinel Security Life Insurance Company

Incidentdiscovered Apr 15, 2025

Stated responseTook steps to secure their environment

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov