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yam.com 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 event impacting yam.com, with 30,320 historical data breaches and 855 active infostealer logs observed between July 2025 and June 2026. The majority of these events, 97.3%, are attributed to historical data breaches, while 2.7% are active infostealer logs. The timeline shows a surge in employee and client-related events in September 2025 and February 2026, suggesting periods of heightened compromise. Malware families like LummaC2 and Redline are prevalent, indicating active credential harvesting and data exfiltration attempts. The primary affected geography is Taiwan, with a notable presence in the United States and Hong Kong. The high volume of historical data breaches, coupled with active infostealer activity, presents a critical risk. The presence of LummaC2 and Redline malware families, known for stealing credentials and sensitive information, suggests a direct threat to user accounts and potentially further compromise of systems. Remediation should focus on identifying the root cause of the historical data breaches, enhancing credential security measures, and implementing robust endpoint detection and response to counter active infostealer threats. Given the nature of the services targeted, including login portals and signup pages, a priority should be placed on securing user authentication mechanisms and monitoring for unauthorized access.

Total Events

31,175
credential exposure events

Employee Affected Events

25,705
account email domain = yam.com

Client Affected Events

5,470
service target = yam.com

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12-Month Events Timeline

Event volume by breach date, employee VS client

EmployeesClients
10,0006,6673,3330
peak month 8,897
Jul 25Sep 25Nov 25Jan 26Mar 26May 26Jun 26

Infostealers VS Data Breaches

Live stealer logs VS data breaches

Infostealer logs
Events855
Share3%
Data breaches
Events30,320
Share97%
Infostealer logs (3%)
855events
Data breaches (97%)
30,320events

25,705 compromised employee accounts pose an infrastructure risk, while 5,470 leaked client credentials create regulatory liability.

Antivirus Distribution

Security Tools on Infected Endpoints

Windows Defender43
Trend Micro2
Windows Defender ESET Security2

Malware Families Distribution

Distribution of Active Stealer Strains

LummaC2143
Redline143
Acreed100
Rhadamanthys43
StealC42
RisePro35
Vidar27
Raccoon8
Remus1

Top Login URLs

Top exposed services found in the event results

  1. 1yam.com1,262
  2. 2https://member.yam.com366
  3. 3member.yam.com335
  4. 4http://member.yam.com/BOX/Login.aspx260
  5. 5member.yam.com/BOX/Login.aspx223
  6. 6http://blog.yam.com/211
  7. 7https://member.yam.com/BOX/Login.aspx203
  8. 8https://tian.yam.com/signup170
  9. 9tian.yam.com/signup137
  10. 10blog.yam.com/136

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.

Taiwan
Events514
United States
Events31
Japan
Events6
France
Events4
Germany
Events4
New Zealand
Events3
Vietnam
Events3

Country Breakdown

  1. 1Taiwan514
  2. 2United States31
  3. 3Hong Kong SAR China12
  4. 4Japan6
  5. 5France4
  6. 6Germany4
  7. 7New Zealand3
  8. 8Vietnam3

Services Classification Distribution

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

Git2
Microsoft2
WordPress1

Operating System Distribution

Distribution of compromised endpoint builds

Windows 11129
Windows 10 Enterprise x6455
Windows 1032
Windows 10 Home30
Windows 10 Pro [x64]26

Leak Repository Classification

Where the exposed records currently reside

0
Named breaches
19,312
Combolist pools
11,008
Unattributed dumps

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