HackingFinancial ServicesFinanceStolen CredentialsRansom DemandedRansom PaidData ExfiltratedCustomer Data InvolvedSupply Chain (3P Vendor)PIIIdentity (basic)Government IDFinancial accountEmploymentMediumResolved

Major League Baseball Players Benefit Plan

bd_b28aa9b98c31a66c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 13, 2022

Filed

Mar 22, 2022

To disclose

10 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

64%

Full breach record for Major League Baseball Players Benefit Plan →

Horizon Actuarial Services, LLC, a third-party vendor for the Major League Baseball Players Benefit Plan, experienced unauthorized access to its servers on Nov 10-11, 2021. The organization discovered the incident on Nov 12, 2021, after receiving an email from an unauthorized group claiming to have stolen personal data. The attackers exfiltrated data including names, addresses, SSNs, and financial account information. Horizon negotiated with and paid the attackers to delete the data. Affected individuals were offered 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

California clockDiscovered Jan 13, 2022 → Notified Jan 13, 20220d ✓ CA 60-day OK10 weeks discovery → filing

Incident timeline

undetected · 64 days

discovery → filing · 10 weeks / 68 days

Nov 10, 2021

Begins

Jan 13, 2022

Discovered

Mar 22, 2022

Filed

vs. sector median

+1 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

Indiana State AGbd_2b3920850e0a546a2022-03-22Verified
Montana State AGbd_512b2d6d8f582fd42022-03-22Verified
Massachusetts State AGbd_534294d26d347a8d2022-03-22Verified
New Hampshire State AGbd_e72714fa9fdc58622022-03-22Verified

Show 1 more filing ↓up to 11d gap

HHS OCRbd_7ce6364398e61b342022-03-11 · +11dVerified

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

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

Discovered: Jan 13, 2022
Breach occurred: Nov 10, 2021 – Nov 11, 2021
Undetected for: 64 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jan 13, 2022
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)Government IDFinancial accountEmployment
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Provided notice to the FBI
Third party: via Horizon Actuarial Services, LLC

During the incident: Initiated efforts to secure computer servers
Launched an investigation 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 online credit monitoring service for 24 months provided by Kroll
Changes made: Reviewed and reinforced the security of systems
Reviewing 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: 10 weeks(68 days from discovery to filing)
Compliance flags: CA 60-day OK · 0d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Jan 13, 2022
→ Notified: Jan 13, 2022
0d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Jan 13, 2022 → Notified: Jan 13, 2022	0d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

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

Montana State AG+11d

Massachusetts State AG+11d

New Hampshire State AG+11d

California State AG+11d · this page

Pattern: first filing Mar 11 (MD), last Mar 22 (CA) — 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://oag.ca.gov/ecrime/databreach/reports/sb24-551904
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: a16614f0de8ee8791532ec290b884bf0ba2201335f4fea0c8f47b9d3ca83602c

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMajor League Baseball Players Benefit Plan

Victim entityMajor League Baseball Players Benefit Plan

Incidentdiscovered Jan 13, 2022

Stated responseInitiated efforts to secure computer servers

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov