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NTT Docomo - Japan 1st Mobile Operator

ransomed

This record tracks a ransomware attack claimed by the ransomed group against NTT Docomo - Japan 1st Mobile Operator. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

1071days open
t1 · Published t2 · Pending
Sep 26, 2023Not disclosed yet
Country
Japan
Business Category
Telecommunications
Employees
0-50
Discovered
2023-09-26
Published
September 26, 2023
Disclosed / Notified
Not disclosed yet
Victim ID
2wIcw0dlGTKC

Attack Summary

With approximately 310,000 employees worldwide, NTT (Nippon Telegraph and Telephone Corporation) is one of the world's leading telecommunications carriers. It is chosen by as many as 88% of the top 100 companies in the Fortune Global Business Ranking "Fortune 500", an annual U.S. business magazine. We offer a wide range of services in Japan, from fixed-line and mobile phones to the Internet and system integration.We have got into their base and exfiltrated everything from there, we dont get paid.We require a ransom of $1,015,000

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for nttdocomo.co.jp — indexed by HaveIBeenRansom.
62
found in Infostealer logs
1,483+
found in Traditional breaches
79+
found in Ransomware leaks
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+ 17 more leak sources locked
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