SunCloudNew 1257 – 350 LogsFile uploaded by a Telegram User

We noticed a new data leak surfacing on a popular Telegram channel, identified as "SunCloudNew 1257". The initial upload, dated August 16, 2025, contained a substantial volume of endpoint-related information. What struck us immediately was the inclusion of plaintext credentials alongside email addresses, a configuration that significantly amplifies the risk of further compromise. The sheer volume, while not unprecedented, combined with the sensitive nature of the exposed data, warrants a detailed examination of its origin and potential impact on our user base.

The breach, categorized as a stealer log, originated from a file uploaded by an anonymous Telegram user. This log file, comprising 43,732 records, appears to be the output of a credential-stealing malware campaign. The exposed data includes email addresses, plaintext passwords, and associated URLs, suggesting the malware targeted web browsing sessions and potentially other applications that store credentials locally. The source structure of the data points to individual endpoint compromises rather than a centralized database breach. The leak locations identified on Telegram indicate a public dissemination, increasing the likelihood of malicious actors leveraging this information for further attacks, such as credential stuffing or targeted phishing campaigns.

While no direct mainstream news coverage has emerged for this specific "SunCloudNew 1257" leak, the broader trend of stealer logs being weaponized is well-documented. OSINT investigations into similar Telegram channels frequently reveal the sale and distribution of compromised credentials. Cybersecurity research from firms like Mandiant and CrowdStrike consistently highlights the persistent threat posed by infostealer malware, which often exfiltrates data in formats mirroring this leak. The ease with which such logs are shared on platforms like Telegram underscores the ongoing challenge of preventing the widespread availability of stolen credentials.