Nitori says attacker may have stolen 37.62 million customer records
Access may date to mid-October; passwords and card data were not exposed, the retailer says.
Stories per day · 30 days
10 RSS
Relateddata-breach19extortion8onamae8gmo7phishing7desktop-cloud6credential-theft5so-net5sony5cyberstrikeai4pii4burger-king3cloud3gmo-internet3iris-ohyama3isp3weblogic3ai-agents2
94 stories, newest first · one card per story
Stories tagged #japan
Wiz says it is not yet on Japan’s ISMAP cloud list
Wiz plans to start an external ISMAP assessment in early 2027 after a completed gap analysis.
Iris Ohyama pulls online store after cloud breach risks 7.7M records
The company exposed personal data of 7.7 million customers, including passwords for some.
1
Nemotron-Personas-Finance-Japan synthetic dataset covers Japan
The Hugging Face post, under an NVIDIA path, gives no further details beyond the title.
Kuken uses OpenAI API to search 70 years of drawings in minutes
Engineers now locate a replacement-part drawing in 4.5 minutes, down from nearly an hour, via a Recursive-built app.
Japan announces emergency cybersecurity package after attacks
The 10 billion yen package includes AI teams and cyber rescue units after data breaches hit major companies and government agencies.
1
Japanese companies seek cyber insurance after data breaches
Cyber insurance covers breach compensation and forensic analysis in Japan
Japan reports a wave of AI-assisted attacks on firms and agencies
Officials cite data on about 260 million people since April, while leak reports rose from 303 in September to 830 in October.
2
RIZAP employee uploaded 726 health records to a personal AI chat
Japanese mutual-aid members' names, birth dates, insurance numbers and disease categories were sent to an unapproved AI account.
1
Hackers steal 2.6 million records from Sony ISP So-net
Intruders hit the member database on October 19, taking subscriber data plus about 54,000 email passwords and 16 bank records.
Credit Saison reports 954% ROI from a ChatGPT Enterprise pilot
A 315-person pilot saved 14 hours a month per person, and Credit Saison rolled ChatGPT Enterprise out companywide in September 2025.
Sony ISP subsidiary breach exposes 2.5 million customer records
So-net and plala files include names and birth dates, plus 54,401 email passwords, with no confirmed misuse.
2
GMO Internet tells Onamae.com customers to disconnect PCs after breach
As many as 26,739 servers may be affected; GMO refused a ransom of about 8 billion yen and has not found ransomware on devices checked so far.
1
Times Car said to report ¥5.5 billion loss after breach
The linked DataBreaches.net page did not load past a Cloudflare check, so no loss, victim, or data details are available.
GMO tells customers to disconnect PCs after breach and ransomware threat
The company said up to 26,739 servers were at risk after malware was found on some customer environments.
Sony So-net breach exposes 2.58 million customer records
Passwords for 54,401 email addresses and 16 bank account records were exposed; membership passwords and cards were not.
So-net breach exposes personal data of more than 2.58 million customers
Attackers took membership details plus 54,401 email passwords and 16 bank-account records; membership passwords and card data were not included.
GMO Internet warns Desktop Cloud customers after ransomware threat
Attackers demanded about ¥8 billion after unauthorized access; GMO says no ransomware was confirmed by October 27.
1
Hackers use CyberStrikeAI agents against Japanese organizations
TrendAI says 44 agents checked at least 19 organizations in October 2026, with deep compromise only in a small share.
1
Trend Micro: three Japan-focused attacks used AI to different degrees
Only one case was confirmed as agent-driven; entry often used exposed legacy systems and default or reused credentials.
1
AI-assisted intruders target Japanese firms and steal credentials
TrendAI reconstructed three infrastructures; the deepest access used exposed admin panels and stolen or default credentials.
1
Sony confirms So-net and plala breach of 2.58 million records
Contact data, some email passwords and 16 bank-account records were exposed; membership passwords and cards were not.
GMO offers $1 million bounty after Desktop Cloud breach
Attackers demanded about $50 million after malware and customer data theft; trading logins were abused at brokers.
GMO tells Onamae.com users to shut down PCs after extortion threat
Attackers demanded about ¥8 billion; alleged data appeared online, but GMO has not confirmed ransomware.
1