HackingHealthcareTechnologyHealthcareStolen CredentialsTargetedCustomer Data InvolvedIdentity (basic)Health (basic)CredentialsLowContained

CASTLIGHT HEALTH, INC.

bd_6c4413a34622f4e7 · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 25, 2019

Filed

Jun 17, 2019

To disclose

8 weeks

Affected

Not disclosed

Confidence

66%

Full breach record for CASTLIGHT HEALTH, INC. →3 incidents on file

Castlight Health notified the NH Attorney General of a credential stuffing incident discovered on April 25, 2019. An unknown actor used stolen credentials from other breaches to attempt access to ~71 user accounts. Compromised data included names, DOB, health info, and insurance details. Notifications sent to NH residents on June 10, 2019. Castlight froze accounts and enhanced monitoring.

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Incident timeline

discovery → filing · 8 weeks / 53 days

Apr 25, 2019

Discovered

Jun 17, 2019

Filed

vs. sector median

5 wks faster

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

Name: Fenwick & West LLP
norm: fenwick west
Domain: fenwick.com

Name: CASTLIGHT HEALTH, INC.
norm: castlight health
Industry: HealthcarellmTechnologyllm

Discovered: Apr 25, 2019
Materiality determined: —
Notification sent: Jun 10, 2019
Affected individuals: Not disclosed
Data types: Identity (basic)Health (basic)Credentials
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Office of the Attorney General
Initial access: valid_credentials

During the incident: Frozen account access immediately
Increased the sensitivity of security monitoring systems that block automated login attempts
Prevented certain types of suspicious international login attempts by blocking the internet protocol (IP) addresses behind these suspicious attempts
Implemented security technology to proactively identify user accounts that recycle the same user name and password combinations available on the internet
Changes made: Implemented security technology to proactively identify user accounts that recycle the same user name and password combinations available on the internet
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(53 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/castlight-health-20190617.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 17, 2019
Raw hash: 18dcaf59521462c327776e0effd3276fb8e469b5735ae4d8ebaa1d1b247ac34c

Reporting entityFenwick & West LLP

Victim entityCASTLIGHT HEALTH, INC.

Incidentdiscovered Apr 25, 2019

Stated responseFrozen account access immediately

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov