kddi.com Domain Breach Exposure Report

The domain kddi.com has experienced a significant number of data breaches and infostealer events over the past year, with 9,518 historical data breaches and 1,047 active infostealer logs. The majority of these events, 90.1%, are attributed to historical data breaches, while 9.9% are active infostealer logs. The timeline shows a surge in employee and client-related events, particularly in January 2026 and March 2026, indicating potential compromise of user credentials or sensitive information. Malware families like LummaC2, Rhadamanthys, and Redline are frequently observed, suggesting active credential harvesting and data exfiltration activities. The high volume of data breaches and infostealer activity, coupled with the presence of common malware families targeting credentials, poses a critical risk. The affected services include customer support portals and online booking systems, which are likely targets for credential stuffing and further exploitation. Remediation efforts should focus on strengthening authentication mechanisms, reviewing access controls for customer-facing services, and enhancing endpoint security to detect and prevent infostealer malware. Given the nature of the services targeted and the data potentially exposed, the closest industry sector is Technology & SaaS.