HackingHealthcareHealthcareTargetedData ExfiltratedPIIIdentity (basic)HighContained

South Texas Oncology and Hematology, PLLC

bd_bdbf2714544b6771 · schema v1 · pii pii-v1

Severity

High

Discovered

Feb 15, 2024

Filed

Jun 13, 2024

To disclose

17 weeks

Affected · nationwide

176,30320 in this filing

Linked

6 filings

Confidence

66%

Full breach record for South Texas Oncology and Hematology, PLLC →

South Texas Oncology and Hematology, PLLC (STOH) disclosed an external system breach (hacking) occurring on October 20, 2023, discovered on February 15, 2024. The incident affected 176,303 individuals, including 20 Maine residents. STOH engaged forensic investigators, notified law enforcement (FBI), and offered 12 months of credit monitoring. Personal identifiers were exposed, though SSNs were not impacted.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Feb 15, 2024 → Filed with AG Jun 13, 2024119d ✗ ME AG >90d17 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 · 118 days

discovery → filing · 17 weeks / 119 days

Oct 20, 2023

Begins

Feb 15, 2024

Discovered

Jun 13, 2024

Filed

vs. sector median

+6 wks slower

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_cbd48682a3249f6c2024-06-13Verified
Indiana State AGbd_d58cb98b736f71172024-06-13Verified
New Hampshire State AGbd_7cf440ecd573dd962024-06-17 · +4dVerified
Massachusetts State AGbd_e611af7c889253542024-06-18 · +5dVerified

Show 1 more filing ↓up to 55d gap

HHS OCRbd_ddfc9fab5fbd81f62024-04-19 · +55dVerified

Name: South Texas Oncology and Hematology, PLLC
norm: south texas oncology and hematology

Name: South Texas Oncology and Hematology, PLLC
norm: south texas oncology and hematology
Industry: Healthcarellm

Discovered: Feb 15, 2024
Breach occurred: Oct 20, 2023
Undetected for: 118 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 13, 2024
Affected individuals: 176,303state + nationwide
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Provided notice to various regulators in March and April 2024Reported this incident to the FBI
Initial access: exploit_public_facing

During the incident: Disconnected all access to the network
Engaged a specialized third-party cybersecurity firm to assist with securing the environment
Conducted a comprehensive forensic investigation
Provided notice to law enforcement and various regulators
Posted notice of the incident on its website
Reported this incident to the FBI
Cooperated with any investigation by law enforcement
Changes made: Employed appropriate protective and corrective measures to protect the integrity of its systems infrastructure and data
Isolated and rebuilt affected machines
Updated various security tools
Built new automated protections to prevent a similar incident
Restored and verified the integrity of backups for any presence of malware before bringing systems back online
Enhanced its security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(119 days from discovery to filing)
Compliance flags: ME AG >90d · 119d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Feb 15, 2024
→ Filed with AG: Jun 13, 2024
119d 90 days ME AG >90d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Feb 15, 2024 → Filed with AG: Jun 13, 2024	119d	90 days	ME AG >90d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

HHS OCRApr 19 · first

Montana State AG+55d

Indiana State AG+55d

Maine State AG+55d · this page

New Hampshire State AG+59d

Massachusetts State AG+60d

Pattern: first filing Apr 19 (TX), last Jun 18 (MA) — a 60-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/ebb2d9ab-2c2a-4ec5-b643-e916ea0eeb4c.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 13, 2024
Raw hash: 28c211027cc5910637eb10ffd42d0bf8356c73d14fda5d7aec9da01d7247b886

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entitySouth Texas Oncology and Hematology, PLLC

Victim entitySouth Texas Oncology and Hematology, PLLC

Incidentdiscovered Feb 15, 2024

Stated responseDisconnected all access to the network

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov