Company Details
mazars
13,721
532,934
5412
forvismazars.com
0
MAZ_2599156
In-progress

Mazars Company CyberSecurity Posture
forvismazars.comMazars is an internationally integrated partnership, specialising in audit, accountancy, advisory, tax and legal services*. Operating in over 100 countries and territories around the world, we draw on the expertise of more than 50,000 professionals – 33,000+ in Mazars’ integrated partnership and 17,000+ via the Mazars North America Alliance – to assist clients of all sizes at every stage in their development. *Where permitted under applicable country laws
Company Details
mazars
13,721
532,934
5412
forvismazars.com
0
MAZ_2599156
In-progress
Between 750 and 799

Mazars Global Score (TPRM)XXXX

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.
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.


No incidents recorded for Mazars in 2025.
No incidents recorded for Mazars in 2025.
No incidents recorded for Mazars in 2025.
Mazars cyber incidents detection timeline including parent company and subsidiaries

Mazars is an internationally integrated partnership, specialising in audit, accountancy, advisory, tax and legal services*. Operating in over 100 countries and territories around the world, we draw on the expertise of more than 50,000 professionals – 33,000+ in Mazars’ integrated partnership and 17,000+ via the Mazars North America Alliance – to assist clients of all sizes at every stage in their development. *Where permitted under applicable country laws


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BDO is the leading provider of professional services within the mid-tier of our profession. We are proud to deliver seamless client service, from 1800 offices in 166 countries, across the world. Our 119K+ professionals continuously transform our approach by embracing future-oriented technology and f

Forget what you think you know about professional services. We go beyond what’s expected and help others do the same. Grant Thornton is the brand name for Grant Thornton LLP and Grant Thornton Advisors LLC the U.S. member firms of Grant Thornton International Ltd, one of the world’s leading indepen

Baker Tilly is a leading advisory, tax and assurance firm, providing clients with a genuine coast-to-coast and global advantage in major regions of the U.S. and in many of the world’s leading financial centers – New York, London, San Francisco, Seattle, Los Angeles, Chicago and Boston. Baker Tilly A

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SW is a fast-expanding professional services network of experts in key locations around the world. As the only extensive international network with deep roots in Asia Pacific, we are the gateway between one of the world's largest economies and the rest of the globe. With our experience in navigating

KPMG is a global organization of independent professional services firms providing Audit, Tax and Advisory services. KPMG is the brand under which the member firms of KPMG International Limited (“KPMG International”) operate and provide professional services. “KPMG” is used to refer to individual me

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Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
The official website of Mazars is https://www.mazars.com.
According to Rankiteo, Mazars’s AI-generated cybersecurity score is 785, reflecting their Fair security posture.
According to Rankiteo, Mazars currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
According to Rankiteo, Mazars is not certified under SOC 2 Type 1.
According to Rankiteo, Mazars does not hold a SOC 2 Type 2 certification.
According to Rankiteo, Mazars is not listed as GDPR compliant.
According to Rankiteo, Mazars does not currently maintain PCI DSS compliance.
According to Rankiteo, Mazars is not compliant with HIPAA regulations.
According to Rankiteo,Mazars is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Mazars operates primarily in the Accounting industry.
Mazars employs approximately 13,721 people worldwide.
Mazars presently has no subsidiaries across any sectors.
Mazars’s official LinkedIn profile has approximately 532,934 followers.
Mazars is classified under the NAICS code 5412, which corresponds to Accounting, Tax Preparation, Bookkeeping, and Payroll Services.
No, Mazars does not have a profile on Crunchbase.
Yes, Mazars maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/mazars.
As of November 27, 2025, Rankiteo reports that Mazars has experienced 2 cybersecurity incidents.
Mazars has an estimated 9,603 peer or competitor companies worldwide.
Incident Types: The types of cybersecurity incidents that have occurred include .
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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.
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.
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.
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.
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.

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