京王電鉄 announced that it would postpone the announcement of its consolidated results for the six months ended September 2026. The postponement follows a ransomware cyberattack that disrupted systems used for financial reporting.
京王電鉄 announced that it would postpone the announcement of its consolidated results for the six months ended September 2026. The postponement is due to a cyberattack involving ransomware, a type of malware used to demand a ransom, which caused system disruptions and delayed the financial reporting process.
The new results announcement date is currently expected to be in early December, while the specific financial impact and the company’s response remain under review. The company indicated that the postponement includes the impact of the external factor of the cyberattack.
In connection with 京王電鉄, the international cybercrime group Qilin (キリン) is reportedly claiming responsibility for the attack. The announcement schedule and assessment of the scope of the impact may change depending on the findings of the ongoing investigation.
Related news has covered the responses of companies affected by similar attacks, developments in the investigation and the company’s future disclosure policy. The postponement of the results announcement is viewed as an example underscoring the importance of cyber risk.