heroquizz.com Domain Breach Exposure Report

The domain heroquizz.com has been associated with 26 client-related events over the past year, primarily consisting of 20 historical data breaches and 6 active infostealer logs. The data breaches appear to originate from "Combolist sources," suggesting compromised credentials. The infostealer activity is linked to the "LummaC2" malware family, which was observed targeting Windows 10 Pro systems. The majority of these events occurred between February and April 2026, with a notable concentration of activity related to "tr.heroquizz.com" and "pt.heroquizz.com/view/site/" services. Given the prevalence of data breaches and active infostealer logs, this exposure poses a significant risk of further credential compromise and potential downstream impacts. Prioritization should focus on investigating the "Combolist sources" to understand the scope of leaked credentials and remediating the LummaC2 malware infections to prevent ongoing data exfiltration. The concentration of activity on specific subdomains suggests these may be key targets or entry points for malicious actors.