Published additional information about unauthorized access. The number of affected individuals is 4,975, and estimated loss of approximately 50 million yen is expected to be recorded as an extraordinary loss in the December fiscal period. The cause was a misconfiguration of administrative functions; preventive measures include connection restrictions and strengthened monitoring. 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The number of affected individuals is 4,975, and estimated loss of approximately 50 million yen is expected to be recorded as an extraordinary loss in the December fiscal period. The cause was a misconfiguration of administrative functions; preventive measures include connection restrictions and strengthened monitoring. Cyber insurance application procedures are in progress.","jir_summary":"### Unauthorized Access and Investigation Status\nThis incident was an unauthorized access that exploited a misconfiguration in the system's administrative functions, detected and blocked on October 14, 2026. At present, no additional intrusions from the unauthorized access have been confirmed, and internet transactions continue to operate. Investigations after the incident identified 4,975 people as potentially affected by information leakage, and individual notifications are being carried out.\n\n### Financial Impact and Countermeasures\nThe estimated loss is approx. 50 million yen, and it is planned to be recorded as an extraordinary loss in Q4 of the fiscal year ending December 2026. The cause was the external accessibility of a function with configuration deficiencies; permanent remediation, restrictions on connection sources, and strengthening of detection and blocking of unauthorized activity have been implemented. A comprehensive inspection and continued security measures utilizing third-party expertise, as well as a review of reporting standards to prevent recurrence, are also being carried out.","jir_financial_highlights":"Estimated Loss Amount: approx. 50 million yen (Current estimate, not a finalized figure)\nTiming of Extraordinary Loss Recognition: Fiscal year ending December 2026 Q4 (Expected to be recorded)\nScale of Affected Customer Data Leakage: 4,975 people (Includes additionally identified cases)","jir_category":"","jir_hashtags":"#InHouseInformationSecurity, #DisclosureUpdate","jir_key_figures":"Number of affected customers whose data leaked: 4,975 people\nEstimated loss amount: approx. 50 million yen\nTiming of extraordinary loss recognition: Fiscal year ending December 2026 Q4","jir_meta_title":"TRADE WORKS Co., Ltd - Additional Notice on Unauthorized Access and Data Leakage | October 2026","jir_meta_description":"TRADE WORKS Co., Ltd provides an update on the investigation and impact of unauthorized access to the system for Iwai Cosmo Securities. Affected individuals total 4,975; estimated loss approx. 50 million yen, expected to be recorded as an extraordinary loss in the December fiscal period. Preventive measures and insurance application procedures are ongoing.","jir_og_title":"TRADE WORKS Co., Ltd - Unauthorized Access Update | October 2026","jir_og_description":"Published additional information regarding unauthorized access to the system for Iwai Cosmo Securities. Affected individuals: 4,975; estimated loss: approx. 50 million yen; extraordinary loss expected to be recorded. Strengthened measures to prevent recurrence.","jir_og_image_url":"\/assets\/og\/company-general_ir.jpg","jir_chart_data_collection":"[]","ir_related_company":58171,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"disclosure_update","footnotes":""},"sector":[],"importance":[],"class_list":["post-134045","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n