MU
Company Details
Linkedin ID:
mazarsinus
Website:
Employees number:
438
Number of followers:
22,313
NAICS:
5412
Industry Type:
Homepage:
mazars.us
IP Addresses:
0
Company ID:
MAZ_2045034
Scan Status:
In-progress
Mazars in US Company CyberSecurity Posture
mazars.us
About Mazars Mazars is a leading international audit, tax and advisory firm, aspiring to build the economic foundations of a fair and prosperous world. Operating as a united partnership, Mazars works as one integrated team, leveraging expertise, scale and cultural understanding to deliver exceptional and tailored services in audit and accounting, as well as tax, financial advisory, consulting, sustainability and legal services*. Founded in Europe, Mazars is present in over 100 countries and territories, with more than 50,000 professionals – 33,000+ in our integrated partnership, 17,000+ via the Mazars North America Alliance – dedicated to helping clients make the most of business opportunities and operate with confidence. *where permitted under applicable country laws. Mazars USA LLP Mazars USA LLP is an independent member firm of Mazars Group, an international audit, tax and advisory organization with operations in 100+ countries and territories. With roots going back to 1921 in the US, the firm has significant national presence in strategic geographies, providing seamless access to 33,000+ professionals around the world. Our industry specialists deliver tailored services to a wide range of clients across sectors, including individuals, high-growth emerging companies, privately-owned businesses and large enterprises.
Mazars in US A.I CyberSecurity Scoring
MU Risk Score (AI oriented)Between 650 and 699
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MU Company CyberSecurity News & History
Past Incidents
2
Attack Types
1
Mazars USA LLP
Breach
Rankiteo Explanation
Attack with significant impact with internal employee data leaks
Description: Mazars USA LLP, a certified public accounting firm, faced regulatory action by the New York Attorney General (NY AG) for failing to secure unencrypted sensitive personal data, including Social Security numbers, financial records, and tax documents of clients and employees. The breaches occurred due to inadequate cybersecurity measures, such as lack of encryption, weak access controls, and failure to monitor third-party vendors. While the article does not specify a direct data leak of customer information, the exposed data if compromised could enable identity theft, financial fraud, or reputational harm. The NY AG’s settlement required Mazars to pay $60,000 in penalties and implement stricter security protocols, including encryption, multi-factor authentication (MFA), and vendor risk assessments. The incident highlights vulnerabilities in handling highly sensitive financial and personal data, particularly in sectors like accounting where trust and confidentiality are critical. The breach did not result in confirmed theft but posed significant risks to employee and client privacy, warranting regulatory intervention.
WeiserMazars, LLC
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: On October 10, 2012, Accume Partners suffered a data breach due to a stolen laptop belonging to WeiserMazars, LLC, an affiliated third-party service provider. The incident was reported by the California Office of the Attorney General on December 10, 2012. The breach exposed sensitive personal information of plan participants, specifically names and Social Security numbers (SSNs). The compromised data belonged to individuals associated with Accume Partners’ retirement or benefit plans, raising concerns over potential identity theft, financial fraud, or misuse of the exposed SSNs. While the exact number of affected individuals was not specified in the report, the exposure of such highly sensitive information posed a significant risk to the privacy and financial security of the impacted participants. The breach stemmed from the physical theft of an unencrypted or inadequately secured device, highlighting vulnerabilities in data protection protocols involving third-party vendors.
MU Company Scoring based on AI Models
Cyber Incidents Likelihood 3 - 6 - 9 months
A.I Risk Score Likelihood 3 - 6 - 9 months
Underwriter Stats for MU
Incidents vs Accounting Industry Average (This Year)
No incidents recorded for Mazars in US in 2026.
Incidents vs All-Companies Average (This Year)
No incidents recorded for Mazars in US in 2026.
Incident Types MU vs Accounting Industry Avg (This Year)
No incidents recorded for Mazars in US in 2026.
Incident History — MU (X = Date, Y = Severity)
MU cyber incidents detection timeline including parent company and subsidiaries
MU Company Subsidiaries
About Mazars Mazars is a leading international audit, tax and advisory firm, aspiring to build the economic foundations of a fair and prosperous world. Operating as a united partnership, Mazars works as one integrated team, leveraging expertise, scale and cultural understanding to deliver exceptional and tailored services in audit and accounting, as well as tax, financial advisory, consulting, sustainability and legal services*. Founded in Europe, Mazars is present in over 100 countries and territories, with more than 50,000 professionals – 33,000+ in our integrated partnership, 17,000+ via the Mazars North America Alliance – dedicated to helping clients make the most of business opportunities and operate with confidence. *where permitted under applicable country laws. Mazars USA LLP Mazars USA LLP is an independent member firm of Mazars Group, an international audit, tax and advisory organization with operations in 100+ countries and territories. With roots going back to 1921 in the US, the firm has significant national presence in strategic geographies, providing seamless access to 33,000+ professionals around the world. Our industry specialists deliver tailored services to a wide range of clients across sectors, including individuals, high-growth emerging companies, privately-owned businesses and large enterprises.
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MU CyberSecurity News
January 21, 2026 06:58 PM
Takeaways From 2025 Financial Institutions Virtual Symposium
The 2025 Financial Institutions Virtual Symposium explored topics such as accounting and tax, credit trends and risks, regulatory compliance...
December 29, 2025 08:00 AM
Supply Chain Security: CMMC, NIST 800-171, & NIST 800-161
As cyberthreats grow more sophisticated and supply chains more interconnected, the U.S. Department of Defense (DoD) has intensified its...
December 17, 2025 08:00 AM
Five Cybersecurity Threats Impacting Tech Companies Ahead of 2026
Five Cybersecurity Threats Impacting Tech Companies Ahead of 2026 · 1. The Shadow AI Challenge for U.S. Tech Enterprises · 2. AI in Security...
November 25, 2025 08:00 AM
Monthly Banking Regulatory Review – November 2025
Brush up on recent bank regulation activities affecting financial institutions, including updates from the Federal Reserve, OCC, FDIC, CFPB,...
November 14, 2025 08:00 AM
Why Research Universities Must Get Serious About IT Compliance
Universities face rising IT compliance demands. Learn how research institutions can align governance with evolving data protection...
November 14, 2025 08:00 AM
Fraud Busters: Future-Proof Your Fraud Strategy for 2026
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November 06, 2025 08:00 AM
Privacy & AI Compliance in 2025: Key Strategies for Cybersecurity Leaders
Cybersecurity leaders can embed privacy by design, stay ahead of evolving AI and privacy regulations, and align innovation with compliance...
October 14, 2025 07:00 AM
2025 Cybersecurity Virtual Symposium
Settings ... Join Forvis Mazars for a two-day symposium during National Cybersecurity Awareness Month, where industry leaders and professionals...
October 13, 2025 07:00 AM
The C-Suite’s Role in Cyber Defense: From Complacency to Commitment
In an era of relentless ransomware attacks, data breaches, and regulatory scrutiny, cybersecurity is no longer just an IT concern—it's a...
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
MU CyberSecurity History Information
Official Website of Mazars in US
The official website of Mazars in US is https://www.mazars.us/.
Mazars in US’s AI-Generated Cybersecurity Score
According to Rankiteo, Mazars in US’s AI-generated cybersecurity score is 693, reflecting their Weak security posture.
How many security badges does Mazars in US’ have ?
According to Rankiteo, Mazars in US currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Has Mazars in US been affected by any supply chain cyber incidents ?
According to Rankiteo, Mazars in US has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed for the organization.
Does Mazars in US have SOC 2 Type 1 certification ?
According to Rankiteo, Mazars in US is not certified under SOC 2 Type 1.
Does Mazars in US have SOC 2 Type 2 certification ?
According to Rankiteo, Mazars in US does not hold a SOC 2 Type 2 certification.
Does Mazars in US comply with GDPR ?
According to Rankiteo, Mazars in US is not listed as GDPR compliant.
Does Mazars in US have PCI DSS certification ?
According to Rankiteo, Mazars in US does not currently maintain PCI DSS compliance.
Does Mazars in US comply with HIPAA ?
According to Rankiteo, Mazars in US is not compliant with HIPAA regulations.
Does Mazars in US have ISO 27001 certification ?
According to Rankiteo,Mazars in US is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of Mazars in US
Mazars in US operates primarily in the Accounting industry.
Number of Employees at Mazars in US
Mazars in US employs approximately 438 people worldwide.
Subsidiaries Owned by Mazars in US
Mazars in US presently has no subsidiaries across any sectors.
Mazars in US’s LinkedIn Followers
Mazars in US’s official LinkedIn profile has approximately 22,313 followers.
NAICS Classification of Mazars in US
Mazars in US is classified under the NAICS code 5412, which corresponds to Accounting, Tax Preparation, Bookkeeping, and Payroll Services.
Mazars in US’s Presence on Crunchbase
No, Mazars in US does not have a profile on Crunchbase.
Mazars in US’s Presence on LinkedIn
Yes, Mazars in US maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/mazarsinus.
Cybersecurity Incidents Involving Mazars in US
As of January 24, 2026, Rankiteo reports that Mazars in US has experienced 2 cybersecurity incidents.
Number of Peer and Competitor Companies
Mazars in US has an estimated 9,699 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at Mazars in US ?
Incident Types: The types of cybersecurity incidents that have occurred include .
Additional Questions
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Latest Global CVEs (Not Company-Specific)
Description
Typemill is a flat-file, Markdown-based CMS designed for informational documentation websites. A reflected Cross-Site Scripting (XSS) exists in the login error view template `login.twig` of versions 2.19.1 and below. The `username` value can be echoed back without proper contextual encoding when authentication fails. An attacker can execute script in the login page context. This issue has been fixed in version 2.19.2.
Risk Information
cvss3
Base: 5.4
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Description
A DOM-based Cross-Site Scripting (XSS) vulnerability exists in the DomainCheckerApp class within domain/script.js of Sourcecodester Domain Availability Checker v1.0. The vulnerability occurs because the application improperly handles user-supplied data in the createResultElement method by using the unsafe innerHTML property to render domain search results.
Description
A Remote Code Execution (RCE) vulnerability exists in Sourcecodester Modern Image Gallery App v1.0 within the gallery/upload.php component. The application fails to properly validate uploaded file contents. Additionally, the application preserves the user-supplied file extension during the save process. This allows an unauthenticated attacker to upload arbitrary PHP code by spoofing the MIME type as an image, leading to full system compromise.
Description
A UNIX symbolic link following issue in the jailer component in Firecracker version v1.13.1 and earlier and 1.14.0 on Linux may allow a local host user with write access to the pre-created jailer directories to overwrite arbitrary host files via a symlink attack during the initialization copy at jailer startup, if the jailer is executed with root privileges. To mitigate this issue, users should upgrade to version v1.13.2 or 1.14.1 or above.
Risk Information
cvss3
Base: 6.0
Severity: LOW
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
cvss4
Base: 6.0
Severity: LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
Description
An information disclosure vulnerability exists in the /srvs/membersrv/getCashiers endpoint of the Aptsys gemscms backend platform thru 2025-05-28. This unauthenticated endpoint returns a list of cashier accounts, including names, email addresses, usernames, and passwords hashed using MD5. As MD5 is a broken cryptographic function, the hashes can be easily reversed using public tools, exposing user credentials in plaintext. This allows remote attackers to perform unauthorized logins and potentially gain access to sensitive POS operations or backend functions.
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RapidWhat Do We Measure ?
Incident
Finding
Grade
Digital Assets
Every week, Rankiteo analyzes billions of signals to give organizations a sharper, faster view of emerging risks. With deeper, more actionable intelligence at their fingertips, security teams can outpace threat actors, respond instantly to Zero-Day attacks, and dramatically shrink their risk exposure window.
These are some of the factors we use to calculate the overall score:
Network Security
Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.
SBOM (Software Bill of Materials)
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
CMDB (Configuration Management Database)
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
Threat Intelligence
Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
Rankiteo is a unified scoring and risk platform that analyzes billions of signals weekly to help organizations gain faster, more actionable insights into emerging threats. Empowering teams to outpace adversaries and reduce exposure.
