Ikegami Tsushinki, the Tokyo-listed electronics maker (code 6771, TSE Standard market), said on October 2, 2026 that information it apparently held has been published on an attacker's leak site on the dark web. The company confirmed this after receiving information from external specialist organisations.
From suspected access to published data
In its September 30, 2026 notice on the cyberattack, Ikegami said it had found traces suggesting unauthorized access to some of its servers. It said it was working with an external specialist body to investigate the cause, the extent of the impact and the scope of any information leak.
The third report moves the incident a step on. The company says the information that appeared on the leak site is information it apparently held, a qualifier it keeps in the notice. The company describes the dark web as a set of websites that cannot be reached through ordinary browsers or search engines.
What is still open
Ikegami says it is now examining the content and scope of the published information. The notice does not say what kind of data is involved, whose data it is, or how much was posted. It also does not name the attacker.
The company says it will announce promptly any further matters that emerge as the investigation proceeds. It apologised to customers, business partners, shareholders and investors for the concern and inconvenience.