HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedDelayed DiscoveryPHIHealth (basic)Identity (basic)Government IDMediumContained

The Chattanooga Heart Institute

bd_92dcbb06b2888672 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 17, 2023

Filed

Oct 6, 2023

To disclose

25 weeks

Affected

15state residents only

Linked

14 filings

Confidence

66%

Full breach record for The Chattanooga Heart Institute →2 incidents on file

The Chattanooga Heart Institute experienced a cybersecurity attack where an unauthorized third party accessed its network between March 8 and March 16, 2023. The Institute discovered indications of the attack on April 17, 2023, and confirmed data access on May 31, 2023. Patient and guarantor information, including PHI and potentially government IDs, was accessed. The Institute engaged forensic vendors, notified law enforcement and HHS, and provided credit monitoring to 15 New Hampshire residents via Epiq starting July 28, 2023.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d25 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 40 days

discovery → filing · 25 weeks / 172 days

Mar 8, 2023

Begins

Apr 17, 2023

Discovered

Oct 6, 2023

Filed

vs. sector median

+14 wks slower

This filing is one of 14 about the same incident.View merged incident

A leak claim by karakurt about this victim predates this filing by 136 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Maine State AGbd_0442e5051ee137822023-10-06Verified by operator
Vermont State AGbd_41c7c1f47282b3aa2023-10-06Verified by operator
Indiana State AGbd_0abfce1eab26b5b92023-07-28 · +70dVerified
Montana State AGbd_27ff2e2d4479e8db2023-07-28 · +70dVerified by operator

Show 6 more filings ↓up to 174d gap

Maine State AGbd_371787f6f5dc7cf62023-07-28 · +70dVerified by operator
New Hampshire State AGbd_98840e756fa810612023-07-28 · +70dVerified by operator
Maine State AGbd_4bc290ca5363ed842024-02-13 · +130dVerified by operator
Vermont State AGbd_aa1ec43b034d96982024-03-27 · +173dVerified by operator
New Hampshire State AGbd_5659cfb7865d2e452024-03-28 · +174dVerified
Maine State AGbd_a2267e549573aa932024-03-28 · +174dCandidate

Showing first 10 of 13 linked disclosures.

Name: The Chattanooga Heart Institute
norm: the chattanooga heart institute

Name: The Chattanooga Heart Institute
norm: the chattanooga heart institute
Industry: Healthcarellm

Discovered: Apr 17, 2023
Breach occurred: Mar 8, 2023 – Mar 16, 2023
Undetected for: 40 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 28, 2023
Affected individuals: 15state-resident count only
Data types: PHIHealth (basic)Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Regulator citations: Notified federal law enforcementNotified the U.S. Department of Health and Human Services pursuant to HIPAAProvided written notice to relevant state regulators
Initial access: exploit_public_facing

During the incident: Engaged an external forensics vendor
Notified federal law enforcement
Secured its network
Contained the incident
Provided access to credit monitoring services through Epiq
Notified the U.S. Department of Health and Human Services pursuant to HIPAA
Notified the three major credit reporting agencies
Changes made: Returned systems to the network with additional security and monitoring tools
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 weeks(172 days from discovery to filing)
Compliance flags: Leak >90d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 5 states

View merged incident ↗

Indiana State AGJul 28 · first

Montana State AGJul 28 · first

Maine State AGJul 28 · first

New Hampshire State AGJul 28 · first

Maine State AG+70d

Vermont State AG+70d

New Hampshire State AG+70d · this page

Maine State AG+200d

Vermont State AG+243d

New Hampshire State AG+244d

Maine State AG+244d

Pattern: first filing Jul 28 (IN), last Mar 28 (ME) — a 244-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 13 — 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://mm.nh.gov/files/uploads/doj/remote-docs/chattanooga-heart-institute-20231006.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 6, 2023
Raw hash: 45594b7eac8ead8a4115250d490a3b584d7f959f823179153a2ef17ce95021fb

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityThe Chattanooga Heart Institute

Victim entityThe Chattanooga Heart Institute

Incidentdiscovered Apr 17, 2023

Stated responseEngaged an external forensics vendor

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov