HackingHealthcareEducationHealthcareCustomer Data InvolvedGovernment IDIdentity (basic)CriticalContained

The Johns Hopkins Health System Corporation

bd_605496983a216d90 · schema v1 · pii pii-v1

Severity

Critical

Discovered

May 31, 2023

Filed

Jul 25, 2023

To disclose

8 weeks

Affected · nationwide

363,88543 in this filing

Linked

5 filings

Confidence

65%

Full breach record for The Johns Hopkins Health System Corporation →

The Johns Hopkins University and affiliated health systems experienced an external system breach (hacking) on May 29, 2023, discovered on May 31, 2023. The incident compromised names and Social Security Numbers of 363,885 individuals, including 43 Maine residents. Notification was sent on June 23, 2023, offering two years of credit monitoring.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered May 31, 2023 → Filed with AG Jul 25, 202355d ⏱ ME AG >30d8 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 · 2 days

discovery → filing · 8 weeks / 55 days

May 29, 2023

Begins

May 31, 2023

Discovered

Jul 25, 2023

Filed

vs. sector median

1 wks faster

This filing is one of 5 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_a5b0b310b78cb0982023-07-25Verified
New Hampshire State AGbd_aa5b4ac8f7c63a372023-07-21 · +4dVerified
HHS OCRbd_b47ce74078dd95e62023-07-31 · +6dVerified
Indiana State AGbd_eebad675ab2c2d022023-06-23 · +32dVerified

Name: The Johns Hopkins Health System Corporation
norm: the johns hopkins health system

Name: The Johns Hopkins Health System Corporation
norm: the johns hopkins health system
Industry: HealthcarellmEducationllm

Discovered: May 31, 2023
Breach occurred: May 29, 2023
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 23, 2023
Affected individuals: 363,885state + nationwide
Data types: Government IDIdentity (basic)
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified Maine Attorney General
Initial access: exploit_public_facing

During the incident: Offered two years of credit monitoring and identity theft protection services through IDX
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(55 days from discovery to filing)
Compliance flags: ME AG >30d · 55d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: May 31, 2023
→ Filed with AG: Jul 25, 2023
55d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: May 31, 2023 → Filed with AG: Jul 25, 2023	55d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGJun 23 · first

New Hampshire State AG+28d

Massachusetts State AG+32d

Maine State AG+32d · this page

HHS OCR+38d

Pattern: first filing Jun 23 (IN), last Jul 31 (MD) — a 38-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/3081802f-d35d-4bed-ab09-87f05c277499.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 25, 2023
Raw hash: 6b5d52d548fac494d24ff30787536ebe923eb7547d0aa5d4f70477997ad07faa

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityThe Johns Hopkins Health System Corporation

Victim entityThe Johns Hopkins Health System Corporation

Incidentdiscovered May 31, 2023

Stated responseOffered two years of credit monitoring and identity theft protection services through IDX

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov