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tbs.co.jp Domain Breach Exposure Report

Risk Score

High Risk

Massive event volume or critical assets compromised.

AI Findings Summary

Critical

The telemetry indicates a significant exposure of client and employee data, with 1,627 client-related events and 229 employee-related events observed over the reporting period. A substantial portion of these events, 1,437, are classified as historical data breaches, while 419 are active infostealer logs. The malware families distribution shows a high prevalence of Redline (44.9%), Acreed (7.6%), and LummaC2 (7.4%), all known for credential theft. The targeted services include internal systems like guest Wi-Fi and AgileWorks, as well as public-facing shopping portals, suggesting a broad attack surface. The leak repository classification indicates that 93.9% of the observed data originated from combolist sources, implying credential stuffing or reuse of compromised credentials.

Total Events

1,856
credential exposure events

Employee Affected Events

229
account email domain = tbs.co.jp

Client Affected Events

1,627
service target = tbs.co.jp

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12-Month Events Timeline

Event volume by breach date, employee VS client

EmployeesClients
6004002000
peak month 566
Jul 25Sep 25Nov 25Jan 26Mar 26May 26Jun 26

Infostealers VS Data Breaches

Live stealer logs VS data breaches

Infostealer logs
Events419
Share23%
Data breaches
Events1,437
Share77%
Infostealer logs (23%)
419events
Data breaches (77%)
1,437events

229 compromised employee accounts pose an infrastructure risk, while 1,627 leaked client credentials create regulatory liability.

Antivirus Distribution

Security Tools on Infected Endpoints

Windows Defender13
ノートン 3601

Malware Families Distribution

Distribution of Active Stealer Strains

Redline188
Acreed32
LummaC231
Rhadamanthys17
Millenium4
Raccoon2
Remus2
StealC1
Vidar1

Top Login URLs

Top exposed services found in the event results

  1. 1http://g-wifi.ad.internal.tbs.co.jp/guestwifi/86
  2. 2g-wifi.ad.internal.tbs.co.jp/guestwifi/63
  3. 3tbs.co.jp59
  4. 4http://agileworks.internal.tbs.co.jp/AgileWorks/Broker/Picus58
  5. 5https://tbs.co.jp53
  6. 6https://shopping.tbs.co.jp/tbs/login52
  7. 7https://shopping.tbs.co.jp48
  8. 8shopping.tbs.co.jp43
  9. 9agileworks.internal.tbs.co.jp/AgileWorks/Broker/Picus42
  10. 10https://ishop.tbs.co.jp28

Infostealer By Geography

Shows the distribution of Infostealer-related credential exposure events across different geographic regions. The location is determined by analyzing the metadata of the infected machines associated with each event.

Japan
Events83
United States
Events17
Germany
Events4
Canada
Events3
Netherlands
Events3
Taiwan
Events3
Australia
Events3
Sweden
Events2

Country Breakdown

  1. 1Japan83
  2. 2United States17
  3. 3Germany4
  4. 4Canada3
  5. 5Netherlands3
  6. 6Taiwan3
  7. 7Australia3
  8. 8Sweden2

Services Classification Distribution

Blast radius - closer to core = more critical infrastructure, size = credential volume

-
Total

Operating System Distribution

Distribution of compromised endpoint builds

Windows 1163
Windows 11 24H2 build 26100 (64 Bit)15
Windows 10 22H2 build 19045 (64 Bit)7
Windows 11 Home (10.0.26100) x646
Windows 11 Pro (10.0.26100) x645

Leak Repository Classification

Where the exposed records currently reside

0
Named breaches
1,350
Combolist pools
87
Unattributed dumps

Disclaimer: This report includes AI-generated content. AI can make mistakes, so verify important findings independently before taking action.