MU
Company Details
Linkedin ID:
mazarsinus
Website:
Employees number:
455
Number of followers:
22,316
NAICS:
5412
Industry Type:
Homepage:
forvismazars.us
IP Addresses:
0
Company ID:
MAZ_2045034
Scan Status:
In-progress
Mazars in US Company CyberSecurity Posture
forvismazars.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)
Mazars in US has 13.64% more incidents than the average of same-industry companies with at least one recorded incident.
Incidents vs All-Companies Average (This Year)
Mazars in US has 56.25% more incidents than the average of all companies with at least one recorded incident.
Incident Types MU vs Accounting Industry Avg (This Year)
Mazars in US reported 1 incidents this year: 0 cyber attacks, 0 ransomware, 0 vulnerabilities, 1 data breaches, compared to industry peers with at least 1 incident.
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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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 691, 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.
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 455 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 22,316 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 November 27, 2025, Rankiteo reports that Mazars in US has experienced 2 cybersecurity incidents.
Number of Peer and Competitor Companies
Mazars in US has an estimated 9,604 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
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.16, 20.3.14, and 21.0.1, there is a XSRF token leakage via protocol-relative URLs in angular HTTP clients. The vulnerability is a Credential Leak by App Logic that leads to the unauthorized disclosure of the Cross-Site Request Forgery (XSRF) token to an attacker-controlled domain. Angular's HttpClient has a built-in XSRF protection mechanism that works by checking if a request URL starts with a protocol (http:// or https://) to determine if it is cross-origin. If the URL starts with protocol-relative URL (//), it is incorrectly treated as a same-origin request, and the XSRF token is automatically added to the X-XSRF-TOKEN header. This issue has been patched in versions 19.2.16, 20.3.14, and 21.0.1. A workaround for this issue involves avoiding using protocol-relative URLs (URLs starting with //) in HttpClient requests. All backend communication URLs should be hardcoded as relative paths (starting with a single /) or fully qualified, trusted absolute URLs.
Risk Information
cvss4
Base: 7.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/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
- https://github.com/angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f
- https://github.com/angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc
- https://github.com/angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e
- https://github.com/angular/angular/releases/tag/19.2.16
- https://github.com/angular/angular/releases/tag/20.3.14
- https://github.com/angular/angular/releases/tag/21.0.1
- https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37
Description
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Uncontrolled Recursion vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft deep ASN.1 structures that trigger unbounded recursive parsing. This leads to a Denial-of-Service (DoS) via stack exhaustion when parsing untrusted DER inputs. This issue has been patched in version 1.3.2.
Risk Information
cvss4
Base: 8.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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
Description
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Integer Overflow vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft ASN.1 structures containing OIDs with oversized arcs. These arcs may be decoded as smaller, trusted OIDs due to 32-bit bitwise truncation, enabling the bypass of downstream OID-based security decisions. This issue has been patched in version 1.3.2.
Risk Information
cvss4
Base: 6.3
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/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
Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, working with large buffers in Lua scripts can lead to a stack overflow. Users of Lua rules and output scripts may be affected when working with large buffers. This includes a rule passing a large buffer to a Lua script. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves disabling Lua rules and output scripts, or making sure limits, such as stream.depth.reassembly and HTTP response body limits (response-body-limit), are set to less than half the stack size.
Risk Information
cvss3
Base: 7.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 to before 8.0.2, a NULL dereference can occur when the entropy keyword is used in conjunction with base64_data. This issue has been patched in version 8.0.2. A workaround involves disabling rules that use entropy in conjunction with base64_data.
Risk Information
cvss3
Base: 7.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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RapidWhat Do We Measure ?
Incident
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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.
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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.
