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clevelandcliffs.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 of 1,335 historical data breaches and 38 active infostealer logs associated with clevelandcliffs.com. The majority of these events, 97.2%, are historical data breaches, while 2.8% are active infostealer logs. Employee accounts are the most affected, with 1,347 instances, followed by 26 client accounts. The timeline shows a substantial increase in employee-related events starting in January 2026, peaking in June 2026. Malware families such as Acreed, Rhadamanthys, LummaC2, Vidar, and Redline are present. Targeted services include various subdomains of clevelandcliffs.com, particularly those related to login and PC access. The data originates from combolist sources and database dumps, with a notable presence in the United States, Vietnam, Mexico, and France. Operating systems are primarily Windows 11 and Windows 10 variants.

Total Events

1,373
credential exposure events

Employee Affected Events

1,347
account email domain = clevelandcliffs.com

Client Affected Events

26
service target = clevelandcliffs.com

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12-Month Events Timeline

Event volume by breach date, employee VS client

EmployeesClients
6004002000
peak month 584
Jul 25Sep 25Nov 25Jan 26Mar 26May 26Jun 26

Infostealers VS Data Breaches

Live stealer logs VS data breaches

Infostealer logs
Events38
Share3%
Data breaches
Events1,335
Share97%
Infostealer logs (3%)
38events
Data breaches (97%)
1,335events

1,347 compromised employee accounts pose an infrastructure risk, while 26 leaked client credentials create regulatory liability.

Antivirus Distribution

Security Tools on Infected Endpoints

No Data Available

Malware Families Distribution

Distribution of Active Stealer Strains

Acreed6
Rhadamanthys2
LummaC22
Vidar2
Redline1

Top Login URLs

Top exposed services found in the event results

  1. 1https://pc.clevelandcliffs.com6
  2. 2https://pc.clevelandcliffs.com/6
  3. 3clevelandcliffs.com5
  4. 4login.clevelandcliffs.com4
  5. 5pc.clevelandcliffs.com3
  6. 6https://login.clevelandcliffs.com/login/login.htm3
  7. 7https://login.clevelandcliffs.com3
  8. 8login.clevelandcliffs.com/2
  9. 9login.clevelandcliffs.com/app/office365/exk1g6lgoikaqtiod5d6/sso/wsfed/passive1
  10. 10https://login.clevelandcliffs.com/app/office365/exk1g6lgoiKAQTIoD5d6/sso/wsfed/passive1

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
Events9
Vietnam
Events2
Mexico
Events1
France
Events1

Country Breakdown

  1. 1United States9
  2. 2Vietnam2
  3. 3Mexico1
  4. 4France1

Services Classification Distribution

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

Salesforce7
Microsoft2

Operating System Distribution

Distribution of compromised endpoint builds

Windows 117
Windows 11 Pro3
Windows 11 22H2 build 22621 (64 Bit)2
Windows 10 Home Single Language (10.0.19045) x642
Windows 11 10.0 build 26200 (64 Bit)1

Leak Repository Classification

Where the exposed records currently reside

0
Named breaches
139
Combolist pools
1,196
Unattributed dumps

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