2025 NTT Communications (NTT Com) — unauthorized access to Order Information Distribution System; ~17.9k corporate customers notified
Data compromised
Customer contract numbers, corporate names, contact names, phone/email, addresses, and service-usage particulars per NTT Com summary
Technical writeup
NTT Communications Corporation (NTT Com) publicly confirmed unauthorized access to its Order Information Distribution System, discovered February 5, 2025, potentially exposing contract metadata and business-contact details for about 17,891 corporate customers of certain enterprise connectivity services. Official NTT Com releases, TechCrunch, SecurityWeek, and follow-on analysis summarized isolation steps, ongoing investigation, and customer notifications. This BreachHistory row keys off the short `ntt` slug in the directory; impact metrics are B2B customer organizations and associated contact records rather than a single consolidated count of natural persons.
Root cause
Unauthorized access and lateral movement affecting internal order-distribution infrastructure (per NTT Com disclosure)