[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fO9N1FrKKgEq4oQQwLnNE3zEMVWoNYyq1hdyrrxrh5-Y":3},{"lesson":4},{"id":5,"slug":6,"article_id":7,"title":8,"body":9,"prevention":10,"framework_refs":11,"status":24,"created_at":25,"published_at":26,"article":27,"tags":31,"podcasts":50},"2e64708f-3604-4d1d-b416-984b55df0261","shinyhunters-targets-ey-via-third-party-platform-breach","8aecefe3-3b88-43a0-9e45-7ea8c08702c7","ShinyHunters Targets EY via Third-Party Platform Breach","The alleged breach of Ernst & Young highlights the critical risk posed by third-party platforms that have privileged access to sensitive client data and internal development environments like Jira, GitHub, and Azure. When a vendor or third-party tool is compromised, attackers can use it as a trusted pivot point to reach otherwise well-defended internal systems — a classic supply chain attack vector. EY's exposure of personal and financial tax documents underscores how high-value professional services firms are prime targets, where a single weak link in the supply chain can affect thousands of end clients. This incident matters because the breach extends liability beyond EY itself to every individual and organization whose confidential financial data was stored on that third-party platform.","**Immediate actions:**\n- Revoke or rotate all credentials and API tokens associated with the compromised third-party platform across Jira, GitHub, and Azure environments.\n- Conduct an emergency audit of third-party integrations to identify which vendors have privileged access to internal systems and sensitive client data.\n\n**Long-term improvements:**\n- Implement a formal Third-Party Risk Management (TPRM) program requiring vendors to meet minimum security baselines before being granted access to production environments.\n- Apply the principle of least privilege to all third-party platform integrations, limiting their access strictly to what is operationally necessary.\n- Enforce data minimization policies so that sensitive client financial records are not stored on external or third-party platforms beyond the minimum required retention period.\n\n**Detection measures:**\n- Deploy continuous monitoring and anomaly detection on connections between third-party platforms and internal development\u002Fcloud environments such as GitHub and Azure.\n- Require third-party vendors to provide real-time security event logs and establish contractual SLAs for breach notification to enable faster incident response.",[12,13,14,15,16,17,18,19,20,21,22,23],"CIS Control 15 – Service Provider Management","CIS Control 6 – Access Control Management","CIS Control 3 – Data Protection","NIST SP 800-161 – Supply Chain Risk Management","NIST AC-2 – Account Management","NIST AC-6 – Least Privilege","NIST SR-6 – Supplier Assessments and Reviews","ISO\u002FIEC 27036 – Information Security for Supplier Relationships","GDPR Article 28 – Processor Obligations","GDPR Article 32 – Security of Processing","GDPR Article 33 – Notification of a Personal Data Breach","ITIL – Supplier Management Practice","published","2026-07-28T18:21:14.723596+00:00","2026-07-28T18:21:14.433+00:00",{"id":7,"url":28,"slug":29,"title":30},"https:\u002F\u002Fhackread.com\u002Fshinyhunters-ernst-young-ey-data-breach-threat-leak\u002F","shinyhunters-claims-ernst-young-ey-data-breach-threatens-july-31-leak-03760b","ShinyHunters Claims Ernst & Young (EY) Data Breach, Threatens July 31 Leak",[32,38,44],{"id":33,"name":34,"slug":35,"description":36,"color":37},"1ec88fde-2d0f-4ed8-932a-33f5ccc0fdc7","Access Control","access-control","Excessive privileges, missing MFA, weak auth","#f97316",{"id":39,"name":40,"slug":41,"description":42,"color":43},"c8b843a5-d5a7-41d1-8d3b-cabded09d2ef","Data Protection","data-protection","Unencrypted data, missing DLP, poor classification","#3b82f6",{"id":45,"name":46,"slug":47,"description":48,"color":49},"f0c2a0af-58aa-4128-87c9-6acd30f2dc48","Supply Chain","supply-chain","Third-party risk, compromised dependencies","#8b5cf6",[]]