who.is Domain Breach Exposure Report
Risk Score
Massive event volume or critical assets compromised.
AI Findings Summary
The domain who.is has been associated with a significant number of data breach events, totaling 4,454, primarily originating from "Combolist sources." Additionally, there are 682 instances of "Active Infostealer Logs" detected, with LummaC2, Redline, and Acreed being the most prevalent malware families. The exposure period spans from July 2025 to June 2026, with a notable increase in employee and client-related events in March 2026. The majority of affected operating systems are Windows variants, and the top originating countries include Bangladesh, Pakistan, and Brazil. Given the high volume of data breaches and infostealer activity, this exposure poses a critical risk. The prevalence of credential stuffing and account takeover attempts targeting services like account signup and login pages is a primary concern. Prioritization should focus on immediate remediation of identified vulnerabilities, enhanced monitoring for suspicious login activity, and user education regarding phishing and credential security. The nature of the data breaches suggests a focus on credential harvesting, which could lead to further downstream impacts if not addressed.
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
157 compromised employee accounts pose an infrastructure risk, while 4,979 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.