MalwareHealthcareFinancial ServicesHealthcarePhishingRansomwareStolen CredentialsProlockData ExfiltratedData EncryptedCustomer Data InvolvedEmployee Data InvolvedMulti-Stage ChainRansom DemandedAuthenticationCredentialsIdentity (basic)Government IDPIIHighContained

Magellan Health

bd_c7cf9063b0b75322 · schema v1 · pii pii-v1

Severity

High

Discovered

Apr 11, 2020

Filed

May 11, 2020

To disclose

4 weeks

Affected · nationwide

5,1191,228 in this filing

Linked

13 filings

Confidence

70%

Full breach record for Magellan Health →6 incidents on file

Magellan Health Inc. reported a ransomware attack discovered on April 11, 2020, following a phishing email on April 6. The attacker deployed ProLock malware and exfiltrated a subset of data from a finance/billing server containing PII (SSNs, W-2s) and employee credentials. 1,228 Washington residents were initially notified; supplemental notice covers 5,119 total affected individuals. Magellan engaged Mandiant and the FBI, contained the threat, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✓ WA AG ≤30d4 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 5 days

discovery → filing · 4 weeks / 30 days

Apr 6, 2020

Begins

Apr 11, 2020

Discovered

May 11, 2020

Filed

vs. sector median

7 wks faster

This filing is one of 13 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Oregon State AGbd_5bd5952fe83a40242020-05-11Candidate
California State AGbd_ab19fc861c82e8262020-05-11Verified
Montana State AGbd_ae473065eafe43122020-05-11Verified
South Carolina State AGbd_9e737f4798eb5a362020-05-12 · +1dVerified

Show 6 more filings ↓up to 37d gap

New Hampshire State AGbd_52cdccf8ed184c492020-05-18 · +7dVerified by operator
California State AGbd_34de5bda8012b71c2020-06-12 · +32dVerified
HHS OCRbd_8bced8d5ed3979b92020-06-12 · +32dVerified
HHS OCRbd_d5286c2b411200662020-06-12 · +32dVerified by operator
Delaware State AGbd_fb92e6e29105fd362020-06-15 · +35dVerified by operator
New Hampshire State AGbd_c2e0d6a5d0abe09d2020-06-17 · +37dVerified

Showing first 10 of 12 linked disclosures.

Name: Norton Rose Fulbright US LLP
norm: norton rose fulbright us

Name: Magellan Health
norm: magellan health
Domain: magellanhealth.com
Industry: HealthcarellmFinancial Servicesllm

Discovered: Apr 11, 2020
Breach occurred: Apr 6, 2020 – Apr 12, 2020
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 12, 2020
Affected individuals: 5,119state + nationwide
Data types: AuthenticationCredentialsIdentity (basic)Government IDPII
Data elements: NameSocial Security numberUsername + password
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoing
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1041 Exfiltration Over C2 ChannelT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Notified Office of the Washington Attorney GeneralWorking closely with the FBINotice to be provided to the United States Department of Health and Human Services Office for Civil Rights pursuant to HIPAANotice to Departments of Insurances and Boards of Pharmacy in several statesNotice to the IRS and state tax authorities
Initial access: phishing_attachment

During the incident: Retained Mandiant to help conduct a thorough investigation
Reported the incident to, and is working closely with, the appropriate law enforcement authorities, including the FBI
Quarantined the data that was stolen with the assistance of the FBI and the cloud service provider
Changes made: Onboarded Mandiant’s Managed Defense, a 24/7 managed detection and response (MDR) service utilizing FireEye endpoint security agent
Deployed additional FireEye Network Security network monitoring devices
Enhanced and enforced additional endpoint security controls through group policy
Ongoing twice-weekly vulnerability scans of Magellan’s external IP address space
Deployed FireEye Email Threat Protection and Proofpoint for enhanced email protection
Implemented network firewall rule changes including blocking IP addresses and domains associated with the attack
Implemented DNS sink holes for malicious domains
Reviewed site-to-site VPN firewall rules for any direct connections into the Magellan network
Reduced number of privileged domain user accounts
Required all privileged accounts to change passwords at least every 24 hours until further notice
Enhanced Active Directory, Domain Administrator, and Domain Controller Security through Group Policy and related Active Directory features
Forced Password Reset
Offering 36 months of complimentary credit monitoring and fraud protection services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: WA AG ≤30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 9 states

View merged incident ↗

Oregon State AGMay 11 · first

California State AGMay 11 · first

Montana State AGMay 11 · first

Washington State AGMay 11 · first · this page

South Carolina State AG+1d

New Hampshire State AG+7d

California State AG+32d

HHS OCR+32d

Delaware State AG+35d

New Hampshire State AG+37d

Pattern: first filing May 11 (OR), last Jun 17 (NH) — a 37-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 12 — the full spread may be wider.

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM10549.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 11, 2020
Raw hash: b3e88f762f3949544dc0f6e779e491afa508d4805cf703104a6e382952186ec5

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityNorton Rose Fulbright US LLP

Victim entityMagellan Health

Incidentdiscovered Apr 11, 2020

Stated responseRetained Mandiant to help conduct a thorough investigation

ComplianceWA AG ≤30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com