Yantai International Cooperation Co., Ltd. (Yantai International), a company specializing in international overseas labor services, has allegedly experienced a data breach exposing sensitive corporate and employee files. The compromised information, totaling over 1.2 GB across multiple compressed archives, was published on a hacker forum by an individual actor.
The allegedly compromised data includes:
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Contact information for members of Japan Business Unit 2
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Specific work visa and general work visa contracts
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Original employee resumes and graduation certificates
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Korea Labor Service documents
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Kanto Communications contracts
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2026 business summary tables and annual business summary tables
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Client gift lists and reimbursement records
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Kansai Business Friends Association 2017.9.19 reception plan
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222 Department shared documents and internal maps
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Combined submission materials and examination records
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