MalwareFinancial ServicesFinanceRansomwareStolen CredentialsRansom DemandedRansom PaidData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumResolved

Major League Baseball Players Benefit Plan

bd_512b2d6d8f582fd4 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 12, 2021

Filed

Mar 22, 2022

To disclose

19 weeks

Affected

22state residents only

Linked

6 filings

Confidence

65%

Full breach record for Major League Baseball Players Benefit Plan →

Horizon Actuarial Services, LLC notified the Major League Baseball Players Benefit Plan participants of a ransomware incident. Unauthorized access occurred Nov 10-11, 2021. Horizon paid a ransom to an external group. PII and government IDs were exposed. FBI was notified. Credit monitoring offered.

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Incident timeline

undetected · 2 days

discovery → filing · 19 weeks / 130 days

Nov 10, 2021

Begins

Nov 12, 2021

Discovered

Mar 22, 2022

Filed

vs. sector median

+10 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Indiana State AGbd_2b3920850e0a546a2022-03-22Verified
Massachusetts State AGbd_534294d26d347a8d2022-03-22Verified
California State AGbd_b28aa9b98c31a66c2022-03-22Verified
New Hampshire State AGbd_e72714fa9fdc58622022-03-22Verified

Show 1 more filing ↓up to 11d gap

HHS OCRbd_7ce6364398e61b342022-03-11 · +11dVerified

Name: Horizon Actuarial
norm: horizon actuarial
Domain: horizonactuarial.com

Name: Major League Baseball Players Benefit Plan
norm: major league baseball players benefit plan
Industry: Financial Servicesllm

Discovered: Nov 12, 2021
Breach occurred: Nov 10, 2021 – Nov 11, 2021
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jan 13, 2022
Affected individuals: 22state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Provided notice to the FBI
Initial access: valid_credentials

During the incident: Initiated efforts to secure our computer servers
Launched an investigation into the legitimacy of the claims in the email with the assistance of third-party computer specialists
Provided notice to the FBI
Negotiated with and paid the unauthorized group in exchange for an agreement that they would delete and not distribute or otherwise misuse the stolen information
Arranged for you to activate, at no cost to you, an online credit monitoring service for 12 months provided by Kroll
Changes made: Reviewing our existing security policies
Implemented additional measures to further protect against similar incidents moving forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(130 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

HHS OCRMar 11 · first

Indiana State AG+11d

Massachusetts State AG+11d

California State AG+11d

New Hampshire State AG+11d

Montana State AG+11d · this page

Pattern: first filing Mar 11 (MD), last Mar 22 (MT) — a 11-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.

Source URL: https://dojmt.gov/wp-content/uploads/Major-League-Baseball-Players-Benefit-Plan-Consumer-Notification-Letter.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 22, 2022
Raw hash: 6a702ad6014cfc3adcc51820beadd8e2322cbd90100e7faff6a288ec10526e5c

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityHorizon Actuarial

Victim entityMajor League Baseball Players Benefit Plan

Incidentdiscovered Nov 12, 2021

Stated responseInitiated efforts to secure our computer servers

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov