super.cz Domain Breach Exposure Report

The domain super.cz has experienced a significant number of data breach events, totaling 327, primarily originating from "Combolist sources." Additionally, there are 101 "Active Infostealer Logs" associated with the domain. The timeline indicates a notable increase in both employee and client-related events from September 2025 onwards, peaking in April 2026. Malware families identified include Redline, LummaC2, and Acreed, with Windows 11 being the most prevalent operating system affected. The majority of identified data breaches and infostealer activity are linked to "Combolist sources," suggesting credential stuffing or similar attacks leveraging previously compromised credentials. Given the high volume of data breaches and active infostealer logs, this exposure presents a critical risk. The prevalence of credential stuffing attacks, indicated by "Combolist sources," means that compromised credentials from super.cz could be used to access other services or lead to further account takeovers. The timeline shows a sustained period of elevated risk, particularly impacting employees and clients. Prioritization should focus on immediate credential reset campaigns for affected users, enhanced monitoring for suspicious login activity, and a review of authentication mechanisms to mitigate the impact of credential stuffing and infostealer malware.