HackingHealthcareFinancial ServicesHealthcareCustomer Data InvolvedData ExfiltratedIdentity (basic)Government IDFinancial accountPHIHealth (basic)MediumContained

Excellus Blue Cross

bd_7d9278e1a53a42f2 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 9, 2015

Filed

Oct 28, 2015

To disclose

7 weeks

Affected

2state residents only

Confidence

66%

Full breach record for Excellus Blue Cross →

Nuance Communications notified the NH AG that Excellus Blue Cross, a downstream subcontractor, suffered a cyber-attack starting August 5, 2015. 2 NH residents were impacted. Data included PII, SSN, and PHI. Nuance emailed participants on Oct 19, 2015.

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Incident timeline

undetected · 35 days

discovery → filing · 7 weeks / 49 days

Aug 5, 2015

Begins

Sep 9, 2015

Discovered

Oct 28, 2015

Filed

vs. sector median

6 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed2 affectedView incident

Name: Nuance Communications, Inc
norm: nuance communications
Domain: nuance.com

Name: Excellus Blue Cross
norm: excellus blue cross
Industry: HealthcarellmFinancial Servicesllm

Discovered: Sep 9, 2015
Breach occurred: Aug 5, 2015
Undetected for: 35 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 19, 2015
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDFinancial accountPHIHealth (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Communication with BCBSMA representativesNotification to New Hampshire Attorney General

During the incident: Excellus has previously sent notices to each impacted Plan participant
Emailed our participants with the attached notification more generally on October 19, 2015
Excellus is offering two years of credit monitoring to affected individuals
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(49 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/excellus-blue-cross-201510282015.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 28, 2015
Raw hash: 51d2a7cf66c0991ce2a864a67c6186f8fc5aefb152c612e8c2caa226b2f0f1f0

Reporting entityNuance Communications, Inc

Victim entityExcellus Blue Cross

Incidentdiscovered Sep 9, 2015

Stated responseExcellus has previously sent notices to each impacted Plan participant

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov