Company Details
grant-thornton-llp
11,931
550,938
5412
gt-us.co
0
GRA_1308213
In-progress

Grant Thornton (US) Company CyberSecurity Posture
gt-us.coForget 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 independent audit & assurance, tax and advisory firms. That means our network has more than 73,000 professionals in more than 146 countries who are ready to help public and private organizations of all sizes take on today’s challenges. But what sets us apart isn’t just what we do – it’s how we do it. Here, we believe in making business more personal and building trust into every result. We’re collaborators – obsessed with quality and ready for anything – who understand the value of strong relationships. It’s how we challenge the expectations of business and empower our people and clients to do it, too. One thing we won’t do? Grant Thornton will never request money or any form of payment for services via social media. Please report any concerns at 1-800-810-3503. Grant Thornton International Limited (GTIL) and the member firms, including Grant Thornton LLP and Grant Thornton Advisors LLC, are not a worldwide partnership. Services are delivered by the member firms. GTIL and its member firms are not agents of, and do not obligate, one another and are not liable for one another’s acts or omissions. Please see www.grantthornton.com for further details.
Company Details
grant-thornton-llp
11,931
550,938
5412
gt-us.co
0
GRA_1308213
In-progress
Between 750 and 799

GT Global Score (TPRM)XXXX



No incidents recorded for Grant Thornton (US) in 2025.
No incidents recorded for Grant Thornton (US) in 2025.
No incidents recorded for Grant Thornton (US) in 2025.
GT cyber incidents detection timeline including parent company and subsidiaries

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 independent audit & assurance, tax and advisory firms. That means our network has more than 73,000 professionals in more than 146 countries who are ready to help public and private organizations of all sizes take on today’s challenges. But what sets us apart isn’t just what we do – it’s how we do it. Here, we believe in making business more personal and building trust into every result. We’re collaborators – obsessed with quality and ready for anything – who understand the value of strong relationships. It’s how we challenge the expectations of business and empower our people and clients to do it, too. One thing we won’t do? Grant Thornton will never request money or any form of payment for services via social media. Please report any concerns at 1-800-810-3503. Grant Thornton International Limited (GTIL) and the member firms, including Grant Thornton LLP and Grant Thornton Advisors LLC, are not a worldwide partnership. Services are delivered by the member firms. GTIL and its member firms are not agents of, and do not obligate, one another and are not liable for one another’s acts or omissions. Please see www.grantthornton.com for further details.


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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,

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Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
The official website of Grant Thornton (US) is https://gt-us.co/3LukwpC.
According to Rankiteo, Grant Thornton (US)’s AI-generated cybersecurity score is 785, reflecting their Fair security posture.
According to Rankiteo, Grant Thornton (US) currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
According to Rankiteo, Grant Thornton (US) is not certified under SOC 2 Type 1.
According to Rankiteo, Grant Thornton (US) does not hold a SOC 2 Type 2 certification.
According to Rankiteo, Grant Thornton (US) is not listed as GDPR compliant.
According to Rankiteo, Grant Thornton (US) does not currently maintain PCI DSS compliance.
According to Rankiteo, Grant Thornton (US) is not compliant with HIPAA regulations.
According to Rankiteo,Grant Thornton (US) is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Grant Thornton (US) operates primarily in the Accounting industry.
Grant Thornton (US) employs approximately 11,931 people worldwide.
Grant Thornton (US) presently has no subsidiaries across any sectors.
Grant Thornton (US)’s official LinkedIn profile has approximately 550,938 followers.
Grant Thornton (US) is classified under the NAICS code 5412, which corresponds to Accounting, Tax Preparation, Bookkeeping, and Payroll Services.
No, Grant Thornton (US) does not have a profile on Crunchbase.
Yes, Grant Thornton (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/grant-thornton-llp.
As of November 27, 2025, Rankiteo reports that Grant Thornton (US) has not experienced any cybersecurity incidents.
Grant Thornton (US) has an estimated 9,603 peer or competitor companies worldwide.
Total Incidents: According to Rankiteo, Grant Thornton (US) has faced 0 incidents in the past.
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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