HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedPHIIdentity (basic)Government IDMediumContained

The Chattanooga Heart Institute

bd_98840e756fa81061 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 17, 2023

Filed

Jul 28, 2023

To disclose

15 weeks

Affected

Not disclosed

Linked

14 filings

Confidence

64%

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

The Chattanooga Heart Institute notified patients of a cybersecurity attack where an unauthorized third party accessed the network between March 8-16, 2023. The institute detected the incident on April 17, 2023, engaged forensic vendors, notified federal law enforcement, and provided free Equifax identity monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d15 weeks discovery → filing

Incident timeline

undetected · 40 days

discovery → filing · 15 weeks / 102 days

Mar 8, 2023

Begins

Apr 17, 2023

Discovered

Jul 28, 2023

Filed

vs. sector median

+4 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 66 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Indiana State AGbd_0abfce1eab26b5b92023-07-28Verified
Montana State AGbd_27ff2e2d4479e8db2023-07-28Verified by operator
Maine State AGbd_371787f6f5dc7cf62023-07-28Verified by operator
Maine State AGbd_0442e5051ee137822023-10-06 · +70dVerified by operator

Show 6 more filings ↓up to 244d gap

Vermont State AGbd_41c7c1f47282b3aa2023-10-06 · +70dVerified by operator
New Hampshire State AGbd_92dcbb06b28886722023-10-06 · +70dVerified by operator
Maine State AGbd_4bc290ca5363ed842024-02-13 · +200dVerified by operator
Vermont State AGbd_aa1ec43b034d96982024-03-27 · +243dVerified by operator
New Hampshire State AGbd_5659cfb7865d2e452024-03-28 · +244dVerified
Maine State AGbd_a2267e549573aa932024-03-28 · +244dCandidate

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: —
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcement
Initial access: exploit_public_facing

During the incident: Took steps to secure its network
Began an investigation with the assistance of an external forensics vendor
Notified federal law enforcement
Returned systems to the network with additional security and monitoring tools
Secured the services of Equifax to provide identity monitoring at no cost
Changes made: Added additional security and monitoring tools
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(102 days from discovery to filing)
Compliance flags: Leak >30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

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 · this page

Maine State AG+70d

Vermont State AG+70d

New Hampshire State AG+70d

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-20230728.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 28, 2023
Raw hash: 0f92b5c362886ef055bd62ce0051d77ded2af08cad99ae20606f57099e5012ce

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityThe Chattanooga Heart Institute

Victim entityThe Chattanooga Heart Institute

Incidentdiscovered Apr 17, 2023

Stated responseTook steps to secure its network

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov