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guokr.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 2,809 clients and 107 employees, primarily driven by 2,561 historical data breaches and 355 active infostealer logs. The exposure period spans from July 2025 to June 2026, with a notable surge in client-related events during March, April, and June 2026. The primary threat vectors identified are the Redline, Acreed, and LummaC2 infostealer families, with Windows 11 and Windows 10 being the most targeted operating systems. The majority of leaked data originates from "Combolist sources," suggesting credential stuffing or account takeover attempts.

Total Events

2,916
credential exposure events

Employee Affected Events

107
account email domain = guokr.com

Client Affected Events

2,809
service target = guokr.com

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12-Month Events Timeline

Event volume by breach date, employee VS client

EmployeesClients
1,0006673330
peak month 806
Jul 25Sep 25Nov 25Jan 26Mar 26May 26Jun 26

Infostealers VS Data Breaches

Live stealer logs VS data breaches

Infostealer logs
Events355
Share12%
Data breaches
Events2,561
Share88%
Infostealer logs (12%)
355events
Data breaches (88%)
2,561events

107 compromised employee accounts pose an infrastructure risk, while 2,809 leaked client credentials create regulatory liability.

Antivirus Distribution

Security Tools on Infected Endpoints

Windows Defender5

Malware Families Distribution

Distribution of Active Stealer Strains

Redline57
Acreed48
LummaC244
Rhadamanthys30
Millenium11
Vidar11
StealC5
Raccoon3
Cthulhu2

Top Login URLs

Top exposed services found in the event results

  1. 1https://account.guokr.com/sign_in/327
  2. 2account.guokr.com/sign_in/299
  3. 3account.guokr.com285
  4. 4https://account.guokr.com276
  5. 5account.guokr.com/sign_in169
  6. 6https://account.guokr.com/sign_in135
  7. 7guokr.com113
  8. 8https://guokr.com95
  9. 9https://account.guokr.com/94
  10. 10http://www.guokr.com79

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.

China
Events118
United States
Events28
Japan
Events23
Taiwan
Events12
Cambodia
Events8
United Kingdom
Events7
Canada
Events4

Country Breakdown

  1. 1China118
  2. 2United States28
  3. 3Japan23
  4. 4Taiwan12
  5. 5Cambodia8
  6. 6United Kingdom7
  7. 7Hong Kong SAR China6
  8. 8Canada4

Services Classification Distribution

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

-
Total

Operating System Distribution

Distribution of compromised endpoint builds

Windows 1155
Windows 1041
Windows 10 Enterprise x6423
Windows 10 企业版 LTSC (10.0.19044) x6422
Windows 10 21H2 build 19044 (64 Bit)12

Leak Repository Classification

Where the exposed records currently reside

0
Named breaches
2,546
Combolist pools
15
Unattributed dumps

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