Social EngineeringProfessional ServicesProfessional ServicesPhishingStolen CredentialsCustomer Data InvolvedPIIIdentity (basic)LowContained

Cornerstone Benefits, Inc.

bd_77b5bd0bd46e937b · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 23, 2019

Filed

Oct 21, 2019

To disclose

13 weeks

Affected

1state residents only

Linked

3 filings

Confidence

67%

Full breach record for Cornerstone Benefits, Inc. →

Cornerstone Benefits, Inc. notified Montana residents that an employee email account was accessed without authorization on July 23, 2019. The incident involved phishing leading to credential compromise. Personal information was present in the account. The company secured the account, engaged forensic investigators, and offered one year of Experian IdentityWorks credit monitoring.

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Incident timeline

discovery → filing · 13 weeks / 90 days

Jul 23, 2019

Discovered

Oct 21, 2019

Filed

vs. sector median

6 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

New Hampshire State AGbd_3ad9f34c042a82842019-10-21Verified
Massachusetts State AGbd_6d36f6fe39c854e62019-10-21Verified

Name: Cornerstone Benefits, Inc.
norm: cornerstone benefits

Name: Cornerstone Benefits, Inc.
norm: cornerstone benefits
Industry: Professional Servicesllm

Discovered: Jul 23, 2019
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Secured the email account to prevent further access
Retained a leading forensic security firm to investigate and confirm the security of our company’s email and computer systems
Offering you a complimentary one-year membership of Experian IdentityWorksSM Credit 3B
Changes made: Reviewing our technical controls
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(90 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

New Hampshire State AGOct 21 · first

Massachusetts State AGOct 21 · first

Montana State AGOct 21 · first · this page

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://dojmt.gov/wp-content/uploads/OCP/Consumer-Notice-41.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 21, 2019
Raw hash: a9a78a526f3bd8a39ded6054543762efdb54dada5a48f6f2317281d229bc82f0

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCornerstone Benefits, Inc.

Victim entityCornerstone Benefits, Inc.

Incidentdiscovered Jul 23, 2019

Stated responseSecured the email account to prevent further access

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov