Japan strengthens cyber defences after widespread data breaches
Japan’s government is tightening cybersecurity measures after breaches exposed information held by ministries, financial firms and technology providers, while investigators examine attacks that have disrupted trading and public services. The Foreign Ministry disclosed on October 30 that approximately 3,600 sets of personal information might have been compromised through unauthorised access to its…
Japan is bolstering its cybersecurity defenses following a series of data breaches that exposed sensitive information across various government and private sector entities. The Foreign Ministry revealed that around 3,600 sets of personal details may have been accessed through unauthorized entry into its network, though confidential information on a separate system remained unaffected.
The ministry detected the intrusion on July 27 and promptly took action to block access and invalidate credentials. An external investigation later confirmed the possibility of data exposure, with no evidence suggesting misuse of the compromised information. Prime Minister Sanae Takaichi convened a ministerial cybersecurity meeting on October 26, emphasizing the risks posed by large-scale data leaks and the potential for further exploitation.
Following this, the Ministry of Economy, Trade and Industry disclosed unauthorized access to the website of the Electricity and Gas Market Surveillance Commission, adding another government service to the growing list of targeted entities. The Financial Services Agency instructed trading firms to enhance surveillance and urged customers to change their credentials, while GMO Internet, a foreign-exchange broker, shut down an affected cloud trading service after discovering unauthorized access.
The company acknowledged that personal data of customers was published online and offered compensation for related losses. Financial markets have already experienced direct losses due to these intrusions, with Finance Minister Satsuki Katayama reporting that no additional fraudulent transactions had been reported by regulators. The National Cybersecurity Office has warned that cyberattacks are impacting organizations across multiple sectors, urging companies to strengthen web application security, monitor suppliers, and control access to sensitive data.
The use of artificial intelligence in launching these attacks is complicating efforts to prevent and respond to breaches, as attackers employ sophisticated vulnerability discovery techniques, including analyzing mobile applications to identify weaknesses in connected servers.
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