Japan’s furniture giant Nitori says hackers stole 37.6 million customer records

Japan’s largest furniture chain Nitori Holdings has disclosed suffering a cyberattack which saw it lose tens of millions of customer records. Both consumer and business customers are affected, but passwords and payment data have not been compromised. In a statement, Read More …

Iris Ohyama attack exposes info of 7.7 million customers

Major Japanese consumer goods manufacturer Iris Ohyama has confirmed suffering a cyberattack which saw it lose data on 7.7 million people. The company first disclosed the breach on October 29, 2026 when it confirmed “unauthorized access on the e-commerce site” Read More …

Japanese internet giant GMO tells customers to shut down and disconnect PCs from the internet following data breach and ransomware threat

GMO warned customers to back up data, disconnect devices, and shut down systems after a cyberattack. Attackers allegedly stole customer data, leaked information, and threatened ransomware deployment. Compromised trading-platform credentials and reports of unauthorized transactions raised concerns for affected users. Read More …

Data breach at Sony ISP subsidiary exposes 2.5 million customer records as Japan hit with another major cyberattack

A subsidiary of Sony Network Communications, the Japanese tech giant’s Internet Service Provider (ISP) arm, has confirmed suffering a data breach which saw it lose sensitive data on roughly 2.5 million people. Among the stolen files were people’s phone numbers, Read More …

Data breach sees Burger King Japan expose over 11 million customer records

The Japanese subsidiary of Burger King has confirmed suffering a data breach and apologized for losing sensitive data on millions of customers. In a breach notification letter, Burger King Japan confirmed the exact date of the breach, as well as Read More …

The hidden network: Inside the phishing infrastructure ecosystem powering global cybercrime

Over the past year, Microsoft uncovered a Chinese-language cybercriminal ecosystem, an interconnected network of phishing kit operators, developers, and an illicit marketplace selling tools and infrastructure for large-scale phishing, enabling cybercriminal operations worldwide. Threat actors purchased and used these tools Read More …

Nichirei getting back online after cyberattack hit KFC supplies

Nichirei, the food distributor hit by a cyberattack that disrupted supplies to Kentucky Fried Chicken Japan and other outlets, said its systems are getting back online as it takes steps to remedy the disruption. The Tokyo-based provider of frozen food, ice and Read More …

Japan: Over 14 million login credentials leaked from six ISPs in major data breach

A data breach that has potentially exposed the email and password combinations for over 14 million customers across six internet service providers (ISPs) has been disclosed by Japanese telecoms provider KDDI Corporation. According to the company, hackers exploited a vulnerability Read More …

ONResolver RAT Abuses TON Blockchain to Target Japan’s Hotel Industry

In late May 2026, suspicious emails were identified being sent to Japanese partner companies of Booking.com, with the subject line “Important: Guest Stay Review Request” (重要:ゲスト滞在レビュー依頼). In this attack, a zip file was downloaded by accessing a hyperlink to a Read More …

Japanese electricity giant apologises after physical drive with data of 10.9 million clients goes missing

A Japanese energy giant has apologised after losing a physical storage drive containing the data on millions of its clients. Workers for Kyushu Electric Power Co. apparently mislaid the drive, which had been left in an unlocked cabinet, the company Read More …