Bookoff announces investigation findings and safeguards after membership data breach

Bookoff Group Holdings announced investigation findings and preventive measures on November 6 following a breach affecting 6,427,735 membership records. The investigation found that a third party exploited an access-control weakness in a system handling member information. The company added an online breach-status inquiry feature, opened a dedicated toll-free line on October 22 and plans to strengthen security management in system development and operations. Its consolidated earnings forecast remains unchanged.