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Thompson & Horton LLP

Thompson & Horton LLP Vendor Cyber Rating & Cyber Score

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Founded in 2009, Thompson & Horton LLP is a full-service law firm dedicated to providing the highest quality, personalized legal representation to schools, institutions of higher education, local governments, and private business The collective experience of our attorneys in representing schools is decades deep and reflects one of the oldest and finest legal traditions in the state of Texas. With offices in Austin, Dallas, Fort Worth, and Houston, Thompson & Horton LLP provides clients, large and small, with a broad range of services including counseling and problem prevention, litigation defense, state and federal appeals, business and real estate transactions, and legislative services.


THL A.I CyberSecurity Scoring

Incident Details
THL
Company Information
Website:http://www.thompsonhorton.com
Employees number:70
Number of followers:979
NAICS:54111
Industry Type:Law Practice
Homepage:thompsonhorton.com
Cyber Premium EstimationGet Supply Chain
THL Risk Score (AI oriented)
Between 650 and 699
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THLLaw Practice
Updated:
04/04/2026
673/1000
Weak
B
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
✖ Insurance prefers TPRM score to calculate premium
THL Global Score (TPRM)
xxxx
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THLLaw Practice
•••
Score locked
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Vulnerabilities
Benchmark vs. industry & size peers
Findings

THL
THLWeak
Current Score
673B (WEAK)
01000
1 incidents
-86 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JULY 2026
678Before Incident
JUNE 2026
678Before Incident
MAY 2026
675Before Incident
APRIL 2026
673Before Incident
MARCH 2026
673Before Incident
FEBRUARY 2026
671Before Incident
JANUARY 2026
670Before Incident
DECEMBER 2025
668Before Incident
NOVEMBER 2025
751Before Incident
Breach
04 Nov 2025 • THL
Thompson & Horton LLP

Thompson & Horton LLP Data Breach

665After Incident
CRITICAL-86
THO2093820110425
Thompson & Horton LLP, a Houston-based legal firm, experienced a cybersecurity breach where an unauthorized individual accessed the network of an associated OB-GYN practice. The attacker acquired sensitive personally identifiable information (PII) and protected health information (PHI) of over 60,000 patients, including: - Names - Social Security numbers - Driver’s license/governmental IDs - Financial account details - Health insurance data - Medical records (conditions/treatments) The breach exposed highly confidential patient data, triggering a class-action investigation by Lynch Carpenter LLP for potential compensation claims. The incident poses severe risks of identity theft, financial fraud, and medical privacy violations, with long-term reputational and legal repercussions for the firm. Affected individuals received breach notifications, and the firm faces scrutiny over its data protection measures.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Personally Identifiable Information (PII)Protected Health Information (PHI)NamesSocial Security numbersDriver’s license numbersGovernmental identification numbersFinancial account informationHealth insurance informationMedical condition or treatment informationBrand Reputation Impact: Potential reputational damage due to exposure of sensitive patient dataLegal Liabilities: Lynch Carpenter, LLP is investigating claims for potential legal action and compensationIdentity Theft Risk: High (due to exposure of SSNs, driver’s license numbers, and financial data)Payment Information Risk: High (financial account information compromised)
DATA BREACH
PIIPHINumber Of Records Exposed: 60,000+Sensitivity Of Data: High (includes SSNs, medical records, and financial data)Data Exfiltration: Yes (records were acquired by unauthorized person)NamesSocial Security numbersDriver’s license numbersGovernmental identification numbersFinancial account informationHealth insurance informationMedical condition or treatment information
REFERENCES
Blog URLSource URL
OCTOBER 2025
751Before Incident
SEPTEMBER 2025
751Before Incident
AUGUST 2025
751Before Incident

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Thompson & Horton LLP Cyber Scoring History | Rankiteo