HackingHealthcareHealthcareStolen CredentialsTargetedPIIIdentity (basic)EmploymentLowContained

South Texas Oncology and Hematology, PLLC

bd_cbd48682a3249f6c · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 15, 2024

Filed

Jun 13, 2024

To disclose

17 weeks

Affected

16state residents only

Linked

6 filings

Confidence

66%

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

South Texas Oncology and Hematology, PLLC notified Montana residents of a cybersecurity incident detected on February 15, 2024. Unauthorized access likely exposed personal information including names, addresses, and employment/insurance details. SSNs were not impacted. STOH engaged forensic investigators, contained the network, reported to the FBI, and offered 12 months of credit monitoring.

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Incident timeline

discovery → filing · 17 weeks / 119 days

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

Maine State AGbd_bdbf2714544b67712024-06-13Verified
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
Materiality determined: —
Notification sent: Jun 13, 2024
Affected individuals: 16state-resident count only
Data types: PIIIdentity (basic)Employment
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: provided notice to law enforcement and various regulators in March and April 2024reported this incident to the FBI
Initial access: valid_credentials

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
Engaged a specialized cybersecurity firm to conduct a forensic investigation
Took steps to contain and remediate its impact
Employed appropriate protective and corrective measures
Worked to contain the situation and to isolate and rebuild affected machines
Updated various security tools
Built new automated protections
Restored and verified the integrity of backups
Reported this incident to the FBI
Enhanced its security measures
Changes made: Updated various security tools
Built new automated protections
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: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

HHS OCRApr 19 · first

Maine State AG+55d

Indiana State AG+55d

Montana 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1475.pdf
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: 56ae420c6a3010bbc9fcba3672062d23061032c8beedef844df453731fbca07f

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov