Upload_by_LOGSYNC_WATERCLOUD_INFO_326_FILES_17_06_2025_THANKS uploaded by a Telegram User

We've been tracking a worrying uptick in stealer log data appearing on Telegram channels, but this particular incident stood out due to its explicit naming convention and the seemingly random collection of data. The file, titled **"Upload_by_LOGSYNC_WATERCLOUD_INFO_326_FILES_17_06_2025_THANKS"**, suggests a specific data exfiltration event tied to a system named "LOGSYNC_WATERCLOUD_INFO". What caught our attention wasn't necessarily the volume of records, but the clear indication of a targeted process and the potential for further, related leaks from the same source. The breach highlights the ongoing risk of credential harvesting via malware and the use of Telegram as a convenient distribution platform.

Breach Breakdown: LOGSYNC_WATERCLOUD_INFO Stealer Log Exposes 18K+ Records

In June 2025, a Telegram user uploaded a stealer log file revealing 18,212 records. This wasn't just another generic dump of credentials; the file name itself, "Upload_by_LOGSYNC_WATERCLOUD_INFO_326_FILES_17_06_2025_THANKS", offered clues. The name implies data exfiltration from a system possibly labeled "LOGSYNC_WATERCLOUD_INFO", with the date clearly marked as June 17, 2025. The presence of the word "THANKS" is an anomaly but likely indicates the poster is acknowledging the source of the log.

The breach was discovered on June 17, 2025, upon its appearance on a public Telegram channel known for hosting stealer logs. The specificity of the file name, hinting at a targeted operation rather than a broad sweep, immediately raised concerns. The data included a mix of email addresses, plaintext passwords, and URLs pointing to potentially sensitive resources. The use of plaintext passwords is a particularly egregious security lapse and dramatically increases the risk of account compromise.

This incident matters to enterprises because it demonstrates the persistent threat of information-stealing malware and the ease with which compromised data can be disseminated via platforms like Telegram. Even if the "LOGSYNC_WATERCLOUD_INFO" system is not directly tied to a major organization, the exposed credentials could be used in credential stuffing attacks against other services, potentially leading to broader compromises. It underscores the importance of robust endpoint security, password management practices, and continuous monitoring for leaked credentials.

• Total records exposed: 18,212
• Types of data included: Email Addresses, Plaintext Passwords, URLs
• Sensitive content types: Potentially sensitive URLs, depending on the destination.
• Source structure: Stealer log file (format unspecified)
• Leak location: Telegram channel
• Date of first appearance: June 17, 2025

External Context & Supporting Evidence

The rise of Telegram as a marketplace for stolen data is well-documented. Security researchers have observed an increase in stealer logs, database dumps, and other sensitive information being traded and shared on various Telegram channels and groups. While specific coverage of this exact breach is not yet available in major news outlets, the trend itself aligns with established patterns. For example, BleepingComputer has frequently reported on the use of Telegram for distributing malware and stolen credentials, highlighting the platform's role in facilitating cybercrime.

Open-source intelligence (OSINT) sources confirm the existence of numerous Telegram channels dedicated to sharing and trading leaked data. The ease of access and anonymity afforded by Telegram makes it an attractive platform for threat actors. One Telegram post, unrelated to this specific breach but illustrative of the trend, claimed to offer "fresh stealer logs with verified credentials" for a nominal fee. Such posts are commonplace and demonstrate the scale of the problem.