UP_DAISYCLOUD-CHAMPIONING – 02_AUGUST_5426_ON_CHANNEL uploaded by a Telegram User

We're seeing an uptick in stealer logs surfacing on Telegram, often targeting specific applications or services. What caught our attention about this particular leak, posted on August 2, 2025, wasn't the volume of records, but the apparent focus on a single service and the inclusion of plaintext passwords. The data had been circulating quietly within a Telegram channel before being identified by our team. This represents a notable risk, particularly given the sensitive nature of the exposed data and the potential for credential stuffing attacks.

UP_DAISYCLOUD-CHAMPIONING Breach: Inside the leak of 191k records with plaintext passwords

A stealer log file, uploaded to a Telegram channel by the user 02_AUGUST_5426_ON_CHANNEL, exposed 191,264 records apparently harvested from endpoints accessing UP_DAISYCLOUD-CHAMPIONING. The leak was discovered on August 2, 2025, during routine monitoring of Telegram channels known to host stolen data. What made this breach particularly concerning was the inclusion of plaintext passwords, a practice that dramatically increases the risk of account compromise and lateral movement. The data appears to have been extracted from infected systems via a credential-stealing malware variant.

This incident highlights the continued threat posed by stealer logs and the importance of robust endpoint security measures. The exposure of plaintext passwords is a stark reminder of the need for password hashing and salting, even for internal or development systems. The breach matters to enterprises now because it provides attackers with readily usable credentials that can be employed in credential stuffing attacks against other services. It also underscores the increasing automation of attacks, where stealer logs are quickly harvested, aggregated, and sold or shared on platforms like Telegram.

• Total records exposed: 191,264
• Types of data included: Email Addresses, Plaintext Passwords, URLs, API host
• Sensitive content types: Passwords
• Source structure: Stealer log file
• Leak location(s): Telegram channel
• Date of first appearance: 02-Aug-2025

The rise of stealer logs is a well-documented trend. As reported by BleepingComputer, stealer logs are increasingly traded on underground forums and Telegram channels, providing attackers with a readily available source of compromised credentials. These logs often contain sensitive information harvested from infected systems, including passwords, cookies, and API keys. One Telegram post claimed the files were "fresh dumps from a botnet targeting cloud service users." This breach is consistent with the broader trend of automated credential theft and the increasing availability of stolen data on readily accessible platforms.