Yes24

Yes24 operates as South Korea's largest online bookseller and a major ticketing platform, serving a dual role in the nation's cultural and entertainment landscape. Its core services encompass the retail of physical books, e-books, and tickets for a wide array of events including concerts, musicals, and other performances. The platform is a central hub for consumers, directly facilitating access to literary content and live entertainment. This combination of books and ticketing distinguishes it within the South Korean market, positioning it as a key intermediary between content creators, event organizers, and the public. The company's infrastructure supports a significant portion of the country's online booking for cultural events, making it integral to the operations of the entertainment industry. Its services are accessible to the general public through its website and mobile application, which form the primary channels for customer interaction and transaction processing.

The company's scale is explicitly defined by its user base, reporting 20 million registered users, which underscores its extensive market penetration and consumer trust. This large footprint confirms its status as a dominant player in both the online retail and event ticketing sectors within South Korea. The operational significance of Yes24 is highlighted by the severe disruption caused by ransomware attacks; these incidents not only paralyzed its own services but also forced the postponement or cancellation of events for major K-pop artists and theatrical productions, demonstrating its critical role in the national entertainment ecosystem. The repeated security breaches, despite post-incident pledges from co-CEOs to invest in cybersecurity and bring in external experts, point to persistent and significant challenges in safeguarding its digital assets and customer data. The company has reported suspicious unauthorized access to customer data to authorities, triggering privacy investigations and raising concerns about potential data exposure, although external data leakage has not been confirmed. These incidents illustrate the high-value target Yes24 represents and the tangible consequences of its service interruptions on both consumers and the broader creative industries it supports.