GMO Internet Group and Park24 are issuing customer compensation after major cyberattacks. GMO shares dropped 14% following the news, while Park24 expects a 5.5 billion yen charge for breach-related costs. These incidents underscore the rising financial risks as Japanese companies face a surge in AI-driven security threats and systemic software vulnerabilities.
Japanese corporations are facing significant financial and operational strain due to a sharp increase in cyberattacks. Two prominent companies, GMO Internet Group and Park24, have reported major security breaches that are forcing them to issue compensation to affected customers and rethink their digital infrastructure.
GMO Internet Group recently experienced a breach on its foreign exchange platform. In response, the company is offering 5,000 yen per user as an initial goodwill gesture. The firm also confirmed that it received extortion demands regarding sensitive customer data but chose not to pay the ransom, opting instead to involve law enforcement. Following this announcement, investors reacted by selling the stock, which dropped nearly 14% to a four-month low.
Park24, the operator of the Times car-sharing service, is managing a similar crisis involving a personal data breach. The company expects to record an extraordinary loss of 5.5 billion yen to cover compensation costs and the mandatory overhaul of its verification procedures. As part of its recovery strategy, Park24 has committed to purging stored identity document images after registration checks, highlighting a trend among companies to reduce the amount of personal data they hold online.
These events reflect a wider trend in Japan, where cybersecurity incidents are on the rise. Industry data indicates that there have been 723 reported cyber incidents in Japan through October of this year, already surpassing the annual totals of previous years. Experts point to several factors driving this increase, including the use of artificial intelligence to automate phishing campaigns and widespread vulnerabilities in the PHP programming language that leave many private and government websites exposed.
For investors, these incidents serve as a reminder of the rising cost of digital security. While larger companies may be able to absorb these costs by increasing their security budgets, the operational burden is significant. The Japanese government is also taking action by forming teams to conduct AI-driven defensive simulations to protect critical digital infrastructure. Investors will likely track how these companies manage their security overhauls, whether such breaches impact customer retention, and if increased security spending pressures future profit margins.