Social EngineeringHealthcareHealthcarePhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedMulti-Stage ChainIdentity (basic)Government IDHealth (basic)Financial accountMediumContained

Advocate Aurora Health, Inc.

bd_8374b04224d1d9f2 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 9, 2020

Filed

Feb 20, 2020

To disclose

6 weeks

Affected

26state residents only

Linked

6 filings

Confidence

65%

Full breach record for Advocate Aurora Health, Inc. →12 incidents on file

Advocate Aurora Health notified Montana AG of a phishing incident occurring Jan 1-9, 2020. Attackers gained access to employee email credentials via phishing, potentially exposing patient PII, PHI, SSNs, and financial data. Incident discovered Jan 9, 2020. Notifications sent April 17, 2020. Response included forensic investigation, credential resets, and credit monitoring offers.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 8 days

discovery → filing · 6 weeks / 42 days

Jan 1, 2020

Begins

Jan 9, 2020

Discovered

Feb 20, 2020

Filed

vs. sector median

5 wks faster

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Montana State AGbd_87cc28bf4aa955d42020-02-20Candidate
Indiana State AGbd_c123e199cd9b21c62020-02-20Verified
Massachusetts State AGbd_592b2e44824aff702020-02-19 · +1dVerified
New Hampshire State AGbd_7a98aefdfbd713952020-02-19 · +1dVerified

Show 1 more filing ↓up to 50d gap

Illinois State AGbd_b975b202fdeeacc12020-01-01 · +50dVerified

Name: Advocate Aurora Health, Inc.
norm: advocate aurora health
Domain: advocateaurorahealth.org

Name: Advocate Aurora Health, Inc.
norm: advocate aurora health
Domain: advocateaurorahealth.org
Industry: Healthcarellm

Discovered: Jan 9, 2020
Breach occurred: Jan 1, 2020 – Jan 9, 2020
Undetected for: 8 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 17, 2020
Affected individuals: 26state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial account
Data elements: Social Security numberDate of birthMedical information
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: notified federal and state law enforcement
Initial access: phishing_link

During the incident: Launched an internal investigation
Notified federal and state law enforcement
Cooperating fully with law enforcement
Continuing our own internal investigation, which includes a forensic investigation performed by external information technology consultants
Changing the credentials for affected Aurora Medical Center - Bay Area employee accounts in January 2020
Resetting the passwords for all Aurora Medical Center - Bay Area workforce members across potentially affected Advocate Aurora systems in January and early February 2020
Made other technical system enhancements, including an email filtering software
Offering a complimentary one-year membership of Experian’s IdentityWorks
Changes made: Enhance information security at Aurora Medical Center - Bay Area
Changing the credentials for affected Aurora Medical Center - Bay Area employee accounts
Resetting the passwords for all Aurora Medical Center - Bay Area workforce members
Made other technical system enhancements, including an email filtering software to help Advocate Aurora workforce members better identify potential phishing emails
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(42 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 5 states

View merged incident ↗

Illinois State AGJan 1 · first

Massachusetts State AG+49d

New Hampshire State AG+49d

Montana State AG+50d

Indiana State AG+50d

Montana State AG+50d · this page

Pattern: first filing Jan 1 (IL), last Feb 20 (MT) — a 50-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/General-Notice-59.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 20, 2020
Raw hash: c9917fdc3aaeeb02d8defadf78f5f7a0dc76d3ebe3db3d5420c105ef402a2f99

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityAdvocate Aurora Health, Inc.

Victim entityAdvocate Aurora Health, Inc.

Incidentdiscovered Jan 9, 2020

Stated responseLaunched an internal investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov