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zakzak.co.jp Domain Breach Exposure Report

Risk Score

High Risk

Massive event volume or critical assets compromised.

AI Findings Summary

Critical

The domain zakzak.co.jp has experienced a significant number of data breaches, totaling 320 events, and 75 infostealer events over the period of July 2025 to June 2026. The majority of these events, 81%, are classified as historical data breaches, with 19% being active infostealer logs. The timeline indicates a surge in client-related events from September 2025 onwards, with employee-related events increasing notably from January 2026. Malware families associated with these events include Redline and LummaC2, and the primary leak repository classification is "Combolist sources". Given the high volume of data breaches and the presence of infostealer activity, this exposure poses a substantial risk to both employees and clients. The prevalence of combolists suggests that compromised credentials may be readily available, increasing the likelihood of account takeovers and further unauthorized access. Prioritization should focus on credential hygiene, incident response for ongoing infostealer activity, and a thorough review of data breach impacts.

Total Events

395
credential exposure events

Employee Affected Events

69
account email domain = zakzak.co.jp

Client Affected Events

326
service target = zakzak.co.jp

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12-Month Events Timeline

Event volume by breach date, employee VS client

EmployeesClients
10067330
peak month 92
Jul 25Sep 25Nov 25Jan 26Mar 26May 26Jun 26

Infostealers VS Data Breaches

Live stealer logs VS data breaches

Infostealer logs
Events75
Share19%
Data breaches
Events320
Share81%
Infostealer logs (19%)
75events
Data breaches (81%)
320events

69 compromised employee accounts pose an infrastructure risk, while 326 leaked client credentials create regulatory liability.

Antivirus Distribution

Security Tools on Infected Endpoints

No Data Available

Malware Families Distribution

Distribution of Active Stealer Strains

Redline17
LummaC28

Top Login URLs

Top exposed services found in the event results

  1. 1https://zakzak.co.jp62
  2. 2zakzak.co.jp54
  3. 3https://zakzak.co.jp/login33
  4. 4https://zakzak.co.jp/home30
  5. 5zakzak.co.jp/login29
  6. 6zakzak.co.jp/home20
  7. 7https://www.zakzak.co.jp15
  8. 8zakzak.co.jp/logon11
  9. 9https://zakzak.co.jp/logon10
  10. 10https://support.zakzak.co.jp7

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.

United States
Events19
Germany
Events7
Netherlands
Events6
China
Events6
France
Events4
Saudi Arabia
Events3
United Kingdom
Events2

Country Breakdown

  1. 1United States19
  2. 2Germany7
  3. 3Netherlands6
  4. 4China6
  5. 5France4
  6. 6Saudi Arabia3
  7. 7Hong Kong SAR China3
  8. 8United Kingdom2

Services Classification Distribution

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

-
Total

Operating System Distribution

Distribution of compromised endpoint builds

Windows 1129
Windows Server 2012 x323
Windows Server 2003 x322
Windows 8 x322
Windows Server 2008 x322

Leak Repository Classification

Where the exposed records currently reside

0
Named breaches
319
Combolist pools
1
Unattributed dumps

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