MalwareProfessional ServicesFinancial ServicesProfessional ServicesRansomwareData ExfiltratedRansom DemandedRansom PaidCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountHealth (basic)HighContained

Horizon Actuarial

bd_5111b6c88c94f7aa · schema v1 · pii pii-v1

Severity

High

Discovered

Nov 12, 2021

Filed

Mar 25, 2022

To disclose

19 weeks

Affected

6,413state residents only

Linked

42 filings

Confidence

66%

Full breach record for Horizon Actuarial →10 incidents on file

Horizon Actuarial Services, LLC reported an unauthorized access to its computer servers on November 10-11, 2021. The incident involved ransomware that encrypted data and resulted in the exfiltration of personal information, including names, SSNs, bank account numbers, and health insurance plan details. The company paid a ransom to the threat actor in exchange for a promise to delete the data. Notification was sent to approximately 6,413 Idaho residents, offering 12 months of identity monitoring services.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 2 days

discovery → filing · 19 weeks / 133 days

Nov 10, 2021

Begins

Nov 12, 2021

Discovered

Mar 25, 2022

Filed

vs. sector median

+1 wks slower

This filing is one of 42 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

California State AGbd_15610822e41f867e2022-05-10 · +46dVerified by operator
New Hampshire State AGbd_3140d98441aff7d22022-05-17 · +53dVerified by operator
California State AGbd_3343e2ff6ac461772022-05-18 · +54dVerified by operator
California State AGbd_0b8a8d1e0b2eb75a2022-05-24 · +60dVerified by operator

Show 6 more filings ↓up to 80d gap

Maine State AGbd_63ec2cad1130c87c2022-05-24 · +60dVerified
Hawaii State AGbd_a9ca9bbf0b626c3f2022-05-24 · +60dVerified by operator
New Hampshire State AGbd_797f45774e6898b62022-05-31 · +67dVerified by operator
Maine State AGbd_23ebf680da220cfe2022-06-09 · +76dVerified by operator
California State AGbd_531852585f7aeb412022-06-09 · +76dVerified by operator
New Hampshire State AGbd_a2e88f733f86ef672022-06-13 · +80dVerified by operator

Showing first 10 of 41 linked disclosures.

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Horizon Actuarial
norm: horizon actuarial
Domain: horizonactuarial.com
Industry: Professional ServicesllmFinancial 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: 6,413state-resident count only
Data types: Identity (basic)Government IDFinancial accountPHI
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: provided notice to the FBISupplemental Notice of Data Event filed with Idaho Attorney General
Initial access: exploit_public_facing

During the incident: Initiated efforts to secure its computer servers
Launched an investigation into the legitimacy of the claims in the email
Provided notice to the FBI
Negotiated with and paid the group in exchange for an agreement that they would delete and not distribute or otherwise misuse the stolen information
Began mailing letters to individuals associated with benefit plans that authorized them to do so
Reviewing its existing security policies and has implemented additional measures to further protect against similar incidents moving forward
Arranged for you to activate, at no cost to you, identity monitoring services for 12 months provided by Kroll
Changes made: Reviewing its existing security policies and has implemented additional measures to further protect against similar incidents moving forward
Arranged for you to activate, at no cost to you, identity monitoring services for 12 months provided by Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 weeks(133 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 5 states

View merged incident ↗

Idaho State AGMar 25 · first · this page

California State AG+46d

New Hampshire State AG+53d

California State AG+54d

California State AG+60d

Maine State AG+60d

Hawaii State AG+60d

New Hampshire State AG+67d

Maine State AG+76d

California State AG+76d

New Hampshire State AG+80d

Pattern: first filing Mar 25 (ID), last Jun 13 (NH) — a 80-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 41 — the full spread may be wider.

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://ag.idaho.gov/content/uploads/2022/04/03-25-2022-Horizon-Actuarial-Services-LLC.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 25, 2022
Raw hash: e4749395391a56e9fe8ddc4b1154c9bfeab786554cfc833c51837455221a3a89

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityHorizon Actuarial

Incidentdiscovered Nov 12, 2021

Stated responseInitiated efforts to secure its computer servers

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceag.idaho.gov