costco.com Domain Breach Exposure Report
Risk Score
Massive event volume or critical assets compromised.
AI Findings Summary
The telemetry indicates a significant exposure event impacting costco.com, with a total of 660,042 recorded events over the period from July 2025 to June 2026. The majority of these events, 571,535, are classified as historical data breaches, while 88,507 are active infostealer logs. The data suggests a widespread compromise affecting both employees (76,298) and clients (583,744). Key malware families involved include Rhadamanthys, Redline, and LummaC2, all known for credential theft. The exposure is heavily concentrated in the United States, with additional activity in Canada and Mexico. The primary source of leaked data appears to be combolist sources, accounting for 92.7% of the identified repository leaks.
Total Events
Employee Affected Events
Client Affected Events
Free Community Account
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12-Month Events Timeline
Event volume by breach date, employee VS client
Infostealers VS Data Breaches
Live stealer logs VS data breaches
76,298 compromised employee accounts pose an infrastructure risk, while 583,744 leaked client credentials create regulatory liability.
Antivirus Distribution
Security Tools on Infected Endpoints
Malware Families Distribution
Distribution of Active Stealer Strains
Top Login URLs
Top exposed services found in the event results
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.
Country Breakdown
Services Classification Distribution
Blast radius - closer to core = more critical infrastructure, size = credential volume
Operating System Distribution
Distribution of compromised endpoint builds
Leak Repository Classification
Where the exposed records currently reside
Disclaimer: This report includes AI-generated content. AI can make mistakes, so verify important findings independently before taking action.