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MGO (Macias Gini & O'Connell LLP)

MGO (Macias Gini & O'Connell LLP) Vendor Cyber Rating & Cyber Score

mgocpa.com
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ISO 27001
SOC 2 Type 1
SOC 2 Type 2
PCI DSS
HIPAA
GDPR

MGO is a global team of financial service professionals serving the full scope of needs shaping our clients’ business and personal goals. Our team members stand ready to help our clients grow through assurance, tax, consulting, and private client services. With human care at the core of everything we do, we provide outstanding service experiences, delivered with sophisticated digital tools that work effortlessly for our clients. Our global platform serves clients in over 100 countries and in 40 different languages. From offices throughout the U.S. and India, we engage our clients in real-time when and where they need us the most. We are honored to work alongside innovators in culture-defining industries. Whether serving a pre-revenue


M A.I CyberSecurity Scoring

Incident Details
M
Company Information
Website:http://www.mgocpa.com
Employees number:598
Number of followers:13,038
NAICS:5412
Industry Type:Accounting
Homepage:mgocpa.com
Cyber Premium EstimationGet Supply Chain
M Risk Score (AI oriented)
Between 650 and 699
logo
MAccounting
Updated:
18/03/2026
669/1000
Weak
B
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
✖ Insurance prefers TPRM score to calculate premium
M Global Score (TPRM)
xxxx
logo
MAccounting
•••
Score locked
Instant access to detailed risk factors
Vulnerabilities
Benchmark vs. industry & size peers
Findings

M
MWeak
Current Score
669B (WEAK)
01000
1 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JULY 2026
677Before Incident
JUNE 2026
675Before Incident
MAY 2026
672Before Incident
APRIL 2026
672Before Incident
MARCH 2026
669Before Incident
FEBRUARY 2026
668Before Incident
JANUARY 2026
667Before Incident
DECEMBER 2025
665Before Incident
NOVEMBER 2025
663Before Incident
OCTOBER 2025
661Before Incident
SEPTEMBER 2025
659Before Incident
AUGUST 2025
658Before Incident
FEBRUARY 2025
754Before Incident
Ransomware
19 Feb 2025 • M
MGO: Mosley Glick O’Brien Data Breach Investigation

MGO Suffers Ransomware Attack, Exposing Sensitive Personal and Health Data

645After Incident
CRITICAL-109
MAC1773852842
MGO Suffers Ransomware Attack, Exposing Sensitive Personal and Health Data In February 2025, accounting and advisory firm MGO disclosed a ransomware attack that compromised sensitive personal and protected health information. The breach, detected on February 19, 2025, prompted an internal investigation to assess the scope of the incident. MGO confirmed that an unauthorized third party accessed its network, potentially exposing a range of personal data. Affected information includes names, Social Security numbers, driver’s licenses, dates of birth, medical diagnoses, health insurance details, financial account numbers, payment card numbers, and tax identification numbers. The exact data exposed varies by individual. On March 16, 2026, MGO began notifying impacted individuals via mail, detailing the specific types of compromised information and offering complimentary credit monitoring services. The breach notice was published on MGO’s website, outlining the incident’s timeline and response efforts. The full extent of the breach’s impact remains under review.
INCIDENT DETAILS -
TYPE
Ransomware
IMPACT
Data Compromised: Sensitive personal and protected health informationIdentity Theft Risk: HighPayment Information Risk: High
DATA BREACH
Personal Identifiable InformationProtected Health InformationFinancial InformationSensitivity Of Data: HighNamesSocial Security numbersDriver’s licensesDates of birthMedical diagnosesHealth insurance detailsTax identification numbers
REFERENCES
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MGO (Macias Gini & O'Connell LLP) Cyber Scoring History | Rankiteo