--- title: The Microsoft Titan case and the security of data access description: Learn how the Titan case reveals critical gaps in data access security and discover best practices for protecting your organization's information. image: https://blog.isecauditors.com/hubfs/Designer-1.png --- English - [Spanish](https://blog.isecauditors.com/el-caso-titan-de-microsoft-y-la-seguridad-de-los-accesos-a-datos) - [English](https://blog.isecauditors.com/en/the-microsoft-titan-case-and-the-security-of-data-access) [![290x123px\_isecauditors](https://blog.isecauditors.com/hs-fs/hubfs/ISEC%20Media/Blog%20Media/290x123px_isecauditors.png?width=290&height=91&name=290x123px_isecauditors.png) ![290x123px\_isecauditors](https://blog.isecauditors.com/hs-fs/hubfs/ISEC%20Media/Blog%20Media/290x123px_isecauditors.png?width=290&height=91&name=290x123px_isecauditors.png)](https://blog.isecauditors.com/?hsLang=en) - [← www.isecauditors.com](https://www.isecauditors.com/) - [academy.isecauditors.com](https://academy.isecauditors.com/) - [← www.isecauditors.com](https://www.isecauditors.com/) - [academy.isecauditors.com](https://academy.isecauditors.com/) [Intrusion Test](https://blog.isecauditors.com/en/tag/intrusion-test) [Security Audits](https://blog.isecauditors.com/en/tag/security-audits) # The Microsoft Titan case and the security of data access [Alberto Villar Arévalo](https://blog.isecauditors.com/en/author/alberto-villar) Oct 9, 2026, 1:43:27 PM Madrid, 9 October 2026. The Titan case highlights how data protection depends on controls working at every access point. Businesses should verify which services are exposed, how identities are validated and what information can be queried. Internet Security Auditors combines technical assessment and consulting to identify weaknesses, support remediation and verify the outcome. According to researcher Faav, Titan accepted tokens without verifying their signature and allowed the local “admin” identity to be assumed. His estimate of 17.3 trillion potentially reachable rows was not a mass extraction. Microsoft restricted access after disclosure. The reported flaw concerns that service’s authentication implementation; it does not establish a general Azure vulnerability. \[1, 2\] The technical lesson is to establish trust before granting access. Systems using signed tokens should verify signatures, allowed algorithms, issuer, audience and validity periods. Authorization must be enforced server-side for each operation. Restricting a web interface does not by itself prove that its APIs are protected. \[3, 4\] What your organisation should review. Inventory published applications, APIs and services; compare permissions with each role’s business needs; review cloud configuration and data connections; and check whether logs support investigation of unusual access. Testing should cover requests the system ought to reject as well as legitimate use. Assessments require authorization, agreed boundaries and defined operating conditions. | **Internet Security Auditors \| General cybersecurity services** Penetration testing · Technical audit · Consulting · Remediation verification | | --- | Services that turn findings into improvements. Internet Security Auditors provides external and internal penetration testing, application and cloud assessments, and consulting on security risks and architecture. Deliverables can include a technical report with evidence, an executive summary and a prioritised action plan. Follow-up verification checks the fixes applied. \[5, 6, 7\] [![cta\_en](https://blog.isecauditors.com/hs-fs/hubfs/ISEC%20Media/Blog%20Media/cta_en.jpg?width=835&height=357&name=cta_en.jpg)](https://www.isecauditors.com/en/intrusion-test) ![ISEC practical guide to reviewing data access](https://blog.isecauditors.com/hs-fs/hubfs/ISEC%20Media/Blog%20Media/ISEC%20practical%20guide%20to%20reviewing%20data%20access.png?width=778&height=545&name=ISEC%20practical%20guide%20to%20reviewing%20data%20access.png) References \[1\] Xataka — Microsoft Titan case (04/10/2026) [https://www.xataka.com/seguridad/17-3-billones-filas-usar-admin-como-usuario-agujero-microsoft-que-descubrio-chaval-16-anos](https://www.xataka.com/seguridad/17-3-billones-filas-usar-admin-como-usuario-agujero-microsoft-que-descubrio-chaval-16-anos) \[2\] Faav — How I Could Have Accessed 17 Trillion Microsoft Records (25/09/2026) [https://blog.faav.net/how-i-couldve-accessed-17-trillion-microsoft-records](https://blog.faav.net/how-i-couldve-accessed-17-trillion-microsoft-records) \[3\] IETF — RFC 8725 JSON Web Token Best Current Practices [https://datatracker.ietf.org/doc/html/rfc8725](https://datatracker.ietf.org/doc/html/rfc8725) \[4\] Microsoft Learn — JSON Web Token Validation in Azure Application Gateway [https://learn.microsoft.com/en-us/azure/application-gateway/json-web-token-overview](https://learn.microsoft.com/en-us/azure/application-gateway/json-web-token-overview) \[5\] Internet Security Auditors — Penetration Testing [https://www.isecauditors.com/en/intrusion-test](https://www.isecauditors.com/en/intrusion-test) \[6\] Internet Security Auditors — Cloud Penetration Testing https://www.isecauditors.com/en/intrusion-testing-in-cloud-environments \[7\] Internet Security Auditors — Security Consulting [https://www.isecauditors.com/en/security-consulting](https://www.isecauditors.com/en/security-consulting) - [Tweet](https://twitter.com/share) --- ![author-image](https://blog.isecauditors.com/hubfs/Logo_isecauditors_contraccion_HP.png) [Alberto Villar Arévalo](https://blog.isecauditors.com/en/author/alberto-villar) PCI SSA, PCI QSA, CISSP, CSSLP, ISO 27001 L.A., CSFPC, SFPC Security Consultant Consulting Department --- [Legal Notice](https://www.isecauditors.com/aviso-legal) [Policy Privacy](https://www.isecauditors.com/politica-privacidad) [Cookie Policy](https://www.isecauditors.com/politica-cookies) --- Copyright © 2026 - All rights reserved ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Alberto Villar Arévalo", "url" : "https://blog.isecauditors.com/en/author/alberto-villar" }, "dateModified" : "2026-10-09T11:43:27.346Z", "datePublished" : "2026-10-09T11:43:27.000Z", "headline" : "The Microsoft Titan case and the security of data access", "image" : [ "https://blog.isecauditors.com/hubfs/Designer-1.png" ], "mainEntityOfPage" : { "@id" : "https://blog.isecauditors.com/en/the-microsoft-titan-case-and-the-security-of-data-access", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://blog.isecauditors.com/hubfs/isec_logo.png" }, "name" : "Internet Security Auditors, S.L." } } ```