Unauthorized access was detected, and customer information of Iwai Cosmo Securities may have been leaked. The cause was improper settings of an administrative function that allowed misuse. Losses and response costs will be fully borne by the company, and application of cyber insurance is being considered. 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The cause was improper settings of an administrative function that allowed misuse. Losses and response costs will be fully borne by the company, and application of cyber insurance is being considered. The company will proceed with recurrence prevention and security strengthening and continue information sharing with relevant authorities.","jir_summary":"### Overview and Incident Details\nThis incident concerns unauthorized access by a third party to the internet trading system provided by TRADE WORKS Co., Ltd to Iwai Cosmo Securities, which has revealed the possibility of leakage of that company's customer information. The affected data pertains to 4,611 people including names and email addresses; the cause is attributed to misuse due to improper configuration of an administrative function, and no password acquisition has been confirmed to date. The incident occurred on October 14, 2026, and the status as of October 16, 2026 has been disclosed.\n\n### Response and Impact\nTRADE WORKS has disabled the misused administrative function, invalidated unauthorized connections, and implemented strengthened countermeasures. Inspections are ongoing in collaboration with external organizations, and no secondary damage has been confirmed at this time. Direct impact on financial results is undetermined; the company intends to bear all incurred losses and costs, and is examining compensation amounts expecting application of cyber insurance. The company will continue to update factual information and re-examine vulnerable points.","jir_financial_highlights":"Losses and response costs: Unknown (Unknown)\nCompensation amount (expected application of cyber insurance): Unknown (Unknown)","jir_category":"","jir_hashtags":"#NoShareBuyback, #NoExecutivePersonnelChanges","jir_key_figures":"4,611 people (subjects of potentially leaked information)\nResponse costs and compensation amount: TBD, application of cyber insurance expected\nIncident date: 2026-10-14, Publication date: 2026-10-16","jir_meta_title":"TRADE WORKS Co., Ltd - Notice of Unauthorized Access | October 2026","jir_meta_description":"TRADE WORKS Co., Ltd announced unauthorized access to the system provided for Iwai Cosmo Securities. Customer information of 4,611 people may have been exposed due to improper administrative settings. The company discloses its response and the scope of impact.","jir_og_title":"TRADE WORKS Co., Ltd Announces Unauthorized Access | October 2026","jir_og_description":"Unauthorized access to the system for Iwai Cosmo Securities may have exposed information of 4,611 people. Cause: improper configuration. The company will strengthen security and share information.","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-132339","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n