HackingHealthcareFinancial ServicesHealthcareStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)Government IDMediumContained

Wisconsin Health Care Liability Insurance Plan

bd_516bea6707a8eaf9 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 5, 2018

Filed

Jan 28, 2019

To disclose

8 weeks

Affected

3state residents only

Confidence

66%

Full breach record for Wisconsin Health Care Liability Insurance Plan →

Wisconsin Health Care Liability Insurance Plan (WHCLIP) notified New Hampshire AG of a data breach where an unauthorized third party used an independent auditor's credentials to access Citrix Sharefile on Nov 4, 2018. Names, addresses, and SSNs were downloaded. 3 NH residents affected. WHCLIP terminated auditor access and offers 12 months credit monitoring.

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Incident timeline

undetected · 31 days

discovery → filing · 8 weeks / 54 days

Nov 4, 2018

Begins

Dec 5, 2018

Discovered

Jan 28, 2019

Filed

vs. sector median

3 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed3 affectedView incident

Name: Wisconsin Health Care Liability Insurance Plan
norm: wisconsin health care liability insurance plan

Name: Wisconsin Health Care Liability Insurance Plan
norm: wisconsin health care liability insurance plan
Industry: HealthcarellmFinancial Servicesllm

Discovered: Dec 5, 2018
Breach occurred: Nov 4, 2018
Undetected for: 31 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 20, 2018
Affected individuals: 3state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: submitted notification of a recent data breach incident pursuant to N.H. Rev. Stat. Ann. §359-C:20
Initial access: valid_credentials

During the incident: Terminated the auditor's access to the secure file sharing system
No longer has a relationship with the auditor
Sent an initial letter to those individuals on December 20, 2018
Intends to mail potentially affected individuals on January 25, 2019 with further details
Offering twelve (12) months of free credit monitoring
Provide a dedicated call center
Changes made: Reviewing the information required by the Plan's accountants and auditors
Reviewing other vendor security practices and procedures
Intends to work with WMMS and its consultants to identify additional measures to mitigate future attacks and threats
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(54 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://mm.nh.gov/files/uploads/doj/remote-docs/wausau-medmal-20190128.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 28, 2019
Raw hash: bcc92ef34b7183a5280a1479d76086b53bd27ce5db342b1a5a117a4a9dfaa696

Reporting entityWisconsin Health Care Liability Insurance Plan

Victim entityWisconsin Health Care Liability Insurance Plan

Incidentdiscovered Dec 5, 2018

Stated responseTerminated the auditor's access to the secure file sharing system

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov