Social EngineeringHealthcareFinancial ServicesHealthcarePhishingStolen CredentialsTargetedMulti-Stage ChainIdentity (basic)Health (basic)LowActive

Cigna International Corporation

bd_612ad709126a067d · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 5, 2018

Filed

Oct 10, 2018

To disclose

5 weeks

Affected

6state residents only

Linked

3 filings

Confidence

66%

All records for Cigna International Corporation →5 incidents on file

Account takeover notice

Cigna International Corporation notified customers of unauthorized access to their accounts. The filing says: “This notice is of an attack known as “credential stuffing”.”

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 5 weeks / 35 days

Sep 5, 2018

Begins

Sep 5, 2018

Discovered

Oct 10, 2018

Filed

vs. sector median

4 wks faster

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

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

HHS OCRbd_03b11a85be97a5192018-10-10Verified
Oregon State AGbd_6a96bd75470b3b2d2018-10-10Verified

Name: Cigna International Corporation
norm: cigna international
Domain: cigna.com

Name: Cigna International Corporation
norm: cigna international
Domain: cigna.com
Industry: HealthcarellmFinancial Servicesllm

Discovered: Sep 5, 2018
Account access: Sep 5, 2018 – Sep 24, 2018
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 6state-resident count only
Data types: Identity (basic)Health (basic)
Attack vector: Phishing
MITRE ATT&CK: T1078 Valid AccountsT1566.002 Spearphishing Link
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Disabled affected accounts
Blocked the sources of the attack
Increased myCigna security
Put into place protections such as location-based Internet Protocol (IP) blocking
Implementing additional measures such as a login prompt known as captcha and two-step authentication
Engaged a nationally known third-party cyber-security firm to verify we’ve taken the proper steps to investigate what happened and continue to mitigate future attacks
Changes made: Implementing additional measures such as a login prompt known as captcha and two-step authentication
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(35 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 ↗

HHS OCROct 10 · first

Oregon State AGOct 10 · first

Montana State AGOct 10 · 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/Cigna.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 10, 2018
Raw hash: 335de8d25de950bdbddd4b52528ad32a0f2e1e27712e30ac1e7fcf16e411b8cf

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCigna International Corporation

Victim entityCigna International Corporation

Incidentdiscovered Sep 5, 2018

Stated responseDisabled affected accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov