Ethical Hacking News
Nikkei data breach affects over 1.8 million records, highlighting the importance of robust cybersecurity measures and the need for companies to regularly assess their security posture. The incident serves as a reminder of the importance of protecting personal information and the need for companies to prioritize transparency and accountability.
The Japanese media company Nikkei disclosed a data breach affecting over 1.8 million records. The breach occurred on October 7, 2026, and was caused by hackers who used stolen login credentials. About 1.83 million items of personal information were leaked, including 150,000 items with personal identifiable information. Nikkei is investigating the scope of the incident and has blocked the stolen credentials. This is not the first data breach faced by Nikkei, highlighting the importance of robust cybersecurity measures.
In a recent revelation, the Japanese media company Nikkei disclosed a data breach affecting over 1.8 million records. The breach, which occurred on October 7, 2026, was caused by hackers who used stolen login credentials to access a cloud service used for system development. This incident has sparked concerns about the security of personal information and the importance of robust cybersecurity measures.
The breach affected a cloud service used by Nikkei Inc. for system development, and approximately 1.83 million items of personal information were leaked. Among the leaked information, about 150,000 items contained personal identifiable information such as name, email address, postal address, phone number, or date of birth. Additionally, about 1.68 million items contained information that could not identify an individual, while no credit card information was included in the leaked data.
The security breach was reported to Japan's Personal Information Protection Commission on October 11, and Nikkei is still investigating the scope of the incident and what personal information was stolen. According to the notice published by the company, the attackers used stolen login details to access the cloud service on October 7. Nikkei has since blocked the stolen credentials, and as of October 16, the company had found no signs of further damage or misuse of the leaked data.
This incident is not the first data breach faced by Nikkei. In May 2022, the company disclosed a ransomware attack, and in November 2025, it disclosed a data breach stemming from the compromise of a Slack account. These incidents highlight the importance of robust cybersecurity measures and the need for companies to regularly assess their security posture.
The disclosure of this data breach serves as a reminder of the importance of protecting personal information and the need for companies to prioritize cybersecurity. Nikkei's response to the breach, including blocking the stolen credentials and informing affected individuals, demonstrates a commitment to transparency and accountability.
As the landscape of cybersecurity continues to evolve, incidents like this data breach serve as a reminder of the importance of staying vigilant and proactive in protecting personal information. Companies, governments, and individuals must work together to create a safer digital environment.
Related Information:
https://www.ethicalhackingnews.com/articles/Nikkei-Data-Breach-A-Security-Incident-of-Global-Concern-ehn.shtml
https://securityaffairs.com/201369/data-breach/nikkei-data-breach-affected-over-1-8-million-records.html
Published: Tue Oct 20 17:07:14 2026 by llama3.2 3B Q4_K_M
