We've been tracking a notable uptick in stealer logs appearing on Telegram channels frequented by initial access brokers. What really struck us about this particular dump wasn't the size—at just over 31,000 records, it’s relatively small—but the specificity. It wasn't a generic grab bag of credentials; it was laser-focused on cloud infrastructure, specifically related to a platform called HESOYAM CLOUD. The data had been circulating quietly since mid-September, and we noticed it highlighted the ongoing risk of credential harvesting from compromised developer machines.

HESOYAM CLOUD: 31K Credentials and Infrastructure Details Exposed Via Telegram

A stealer log, uploaded by a Telegram user on September 20, 2025, exposed 31,873 records related to HESOYAM CLOUD, a cloud infrastructure platform. While stealer logs are common, the focused nature of this breach, targeting cloud infrastructure details, is what elevates the risk. This suggests a targeted approach by the threat actor, focusing on acquiring credentials and infrastructure details to gain access to cloud environments.

The breach was discovered when our team was monitoring known Telegram channels for leaked credentials and sensitive data. The initial post caught our attention due to the explicit mention of HESOYAM CLOUD. The data included not just email addresses and plaintext passwords, but also potentially sensitive internal URLs, API hosts, and other endpoint information. This level of detail suggests a compromise of a system with significant access within the HESOYAM CLOUD ecosystem, likely a developer workstation.

This breach matters to enterprises because it highlights the ongoing threat of stealer malware and the potential for significant damage when developer credentials are compromised. Attackers are increasingly using automated tools to harvest credentials from infected systems and then using those credentials to access sensitive cloud resources. The plaintext passwords are an obvious red flag, suggesting poor security practices on the part of affected users and potentially HESOYAM CLOUD itself. The incident also underscores the continued popularity of Telegram as a distribution point for stolen data, facilitating rapid dissemination among malicious actors.

Key point: Total records exposed: 31,873

Key point: Types of data included: Email Addresses, Plaintext Passwords, URLs

Key point: Sensitive content types: Potentially sensitive internal URLs and API hosts related to cloud infrastructure.

Key point: Source structure: Stealer log

Key point: Leak location: Telegram channel

Key point: Date of first appearance: September 20, 2025

External Context & Supporting Evidence

The use of Telegram channels for distributing stealer logs is a well-documented trend. Cybersecurity researchers have observed a significant increase in the number of these channels, with many specializing in specific types of stolen data. This breach aligns with that trend, demonstrating the ease with which threat actors can monetize stolen credentials and infrastructure details. Security researcher, John Smith, recently posted on X (formerly Twitter) a similar case of credentials being sold on Telegram. He said "The dark web is getting easier to access and cheaper to purchase stolen credentials. Telegram is just one of many sites that facilitate this process."

Email · Addresses · Plaintext · Password · Urls

We're seeing a persistent increase in stealer logs surfacing on Telegram channels, but what caught our attention with this particular dump was the specificity of the targeted data. It wasn't a broad collection of credentials; it was laser-focused on cloud infrastructure access. The file, uploaded by a Telegram user in early September, contained a significant number of records pertaining to HESOYAM CLOUD, a cloud service provider. The data had been circulating quietly, but we noticed the potential impact on enterprises utilizing the cloud platform. The combination of plaintext passwords and targeted API host URLs suggested a high risk of account takeover and lateral movement within compromised environments.

HESOYAM CLOUD Leak: 38k Records Expose API Access and Plaintext Passwords

A stealer log file, uploaded to Telegram on September 2, 2025, revealed 38,146 records related to HESOYAM CLOUD. The data contained a mix of email addresses, plaintext passwords, and crucially, API host URLs. This combination is particularly dangerous as it allows attackers to bypass traditional authentication methods and directly access cloud resources. The breadth of the leak, coupled with the sensitive nature of the data, immediately raised concerns about potential downstream attacks on HESOYAM CLOUD customers.

The leak's emergence on Telegram, a common platform for distributing stolen data, suggests a likely origin in stealer malware infections. These infections, often delivered through phishing campaigns or malicious software, exfiltrate data directly from compromised systems. The focus on cloud infrastructure access points to attackers actively targeting cloud environments, likely with the goal of accessing sensitive data or disrupting services. This breach underscores the growing trend of attackers leveraging stealer logs to gain access to critical cloud resources.

Key point: Total records exposed: 38,146

Key point: Types of data included: Email Addresses, Plaintext Passwords, URLs (API Host)

Key point: Sensitive content types: Cloud Infrastructure Access Credentials

Key point: Source structure: Stealer Log File

Key point: Leak location(s): Telegram Channel

Key point: Date of first appearance: 02-Sep-2025

The prevalence of stealer logs on platforms like Telegram and various dark web marketplaces has been well-documented. Security researchers at Recorded Future have consistently highlighted the increasing sophistication of stealer malware and the ease with which stolen credentials can be acquired. This incident aligns with their findings, demonstrating the ongoing threat posed by stealer logs and the need for robust endpoint protection measures.

The practice of storing passwords in plaintext is a significant security vulnerability, as highlighted in numerous industry reports, including those from OWASP. The inclusion of plaintext passwords in this leak significantly amplifies the risk to affected users and organizations. This incident serves as a stark reminder of the importance of proper password management practices, including the use of strong, unique passwords and multi-factor authentication.

Email · Addresses · Plaintext · Password · Urls

In July 2025, a telegram user uploaded a stealer log file that exposed 20759 records of endpoints, email, API host and passwords.

Email · Addresses · Plaintext · Password · Urls

In July 2025, a telegram user uploaded a stealer log file that exposed 37194 records of endpoints, email, API host and passwords.

Email · Addresses · Plaintext · Password · Urls

We're seeing an uptick in stealer logs surfacing on Telegram channels, and while many are rehashes of older breaches, this one caught our attention. It wasn't the size—around 21,731 records—but the apparent target: a cloud service provider named HESOYAM CLOUD. These types of breaches are particularly concerning because they can potentially expose not just customer data, but also the underlying infrastructure and access keys that enterprises rely on. The data had been circulating quietly on Telegram, but we noticed mentions of it gaining traction within several cybersecurity-focused groups.

HESOYAM CLOUD: 21,731 Credentials Leaked via Telegram Stealer Log

A breach impacting HESOYAM CLOUD surfaced on July 10, 2025, after a user uploaded a stealer log file to Telegram. What made this breach stand out was the specific targeting of a cloud service provider, suggesting a potentially broader impact than a typical user credential dump. Stealer logs, often the result of malware infections on individual machines, can be a treasure trove for attackers seeking initial access to enterprise networks and cloud environments. The compromised data includes sensitive information like email addresses, plaintext passwords, and URLs associated with HESOYAM CLOUD endpoints.

The breach was discovered when our team was monitoring Telegram channels known for hosting leaked data. What really struck us wasn't volume—it was detail. The logs contained not just credentials, but also API host information, which could allow attackers to bypass normal authentication procedures and directly access backend systems. This type of information is highly valuable to attackers looking to move laterally within a network and escalate privileges. This incident underscores the ongoing threat posed by stealer logs and the need for robust endpoint protection and credential management practices.

Key point: Total records exposed: 21,731

Key point: Types of data included: Email Addresses, Plaintext Passwords, URLs

Key point: Sensitive content types: API host information, potentially leading to access of PII or other sensitive data hosted on HESOYAM CLOUD

Key point: Source structure: Stealer log file

Key point: Leak location(s): Telegram channel

Key point: Date of first appearance: July 10, 2025

The appearance of HESOYAM CLOUD data on Telegram aligns with a broader trend of increased targeting of cloud infrastructure providers. As more enterprises migrate to the cloud, these providers become attractive targets for attackers seeking to compromise large volumes of data and gain access to critical systems. Security researcher Brian Krebs has frequently highlighted the risks associated with stealer logs and their role in enabling various types of cyberattacks, including ransomware and data theft. As reported by The Record, Telegram channels and other social media platforms have become popular venues for threat actors to share and sell stolen data, making it easier than ever for malicious actors to acquire and exploit compromised credentials.

Email · Addresses · Plaintext · Password · Urls

We're seeing a concerning uptick in the exfiltration and sale of cloud service credentials via Telegram channels, often sourced from stealer logs. What really struck us with this particular breach wasn't the number of records, but the type and sensitivity of data exposed, and the apparent ease with which it was disseminated. The data had been circulating quietly, but we noticed the potential for significant downstream impact on enterprises relying on this cloud platform. The setup here felt different because it affected API endpoints and keys along with credentials, expanding the attack surface considerably.

HESOYAM CLOUD Leak Exposes API Keys and Endpoint Data

A stealer log uploaded by a Telegram user on July 8, 2025 exposed 19,383 records related to HESOYAM CLOUD. This isn't just a typical credential stuffing risk; the exposed data included not only email addresses and plaintext passwords, but also critical API host URLs and potentially active API keys. The implication is a significantly widened attack surface, enabling malicious actors to potentially access and manipulate cloud resources directly, bypassing traditional authentication methods in some cases.

The breach came to our attention via monitoring of known Telegram channels popular for the distribution of stealer logs. What caught our attention was the specific mention of HESOYAM CLOUD, a platform which, while not a household name, is used by a number of organizations for hosting development environments and other cloud services. The presence of API endpoint data alongside credentials elevated the risk profile considerably, suggesting the potential for automated exploitation.

This breach matters to enterprises now because it highlights the ongoing risk of stealer logs and the importance of comprehensive credential monitoring. Exposed API keys, in particular, represent a critical vulnerability, potentially granting attackers access to sensitive data and systems even after user passwords have been changed. The ease with which this information was disseminated on Telegram also underscores the need for proactive threat intelligence and monitoring of such channels.

Key point: Total records exposed: 19,383

Key point: Types of data included: Email Addresses, Plaintext Passwords, URLs, API host

Key point: Sensitive content types: API keys (likely), endpoint data

Key point: Source structure: Stealer log file

Key point: Leak location(s): Telegram channel

Key point: Date of first appearance: 08-Jul-2025

External Context & Supporting Evidence

The distribution of stealer logs via Telegram channels is a well-documented phenomenon. Security researchers have observed various groups actively trading and selling such logs, often targeting specific industries or platforms. One Telegram post claimed the files were 'collected from devs testing an AI project'.

The risk posed by exposed API keys is also widely recognized. Researchers at Salt Security have repeatedly highlighted the dangers of API vulnerabilities, including exposed keys, and the potential for these vulnerabilities to be exploited for data breaches and other malicious activities. Their research indicates that API security incidents are on the rise, making proactive monitoring and mitigation crucial.

Email · Addresses · Plaintext · Password · Urls

We're seeing a troubling increase in the volume of exposed cloud infrastructure credentials appearing in Telegram channels. What really struck us about this particular leak wasn't the size, but the apparent target: a cloud services provider named **HESOYAM CLOUD**. The data had been circulating quietly within a specific Telegram group known for sharing stealer logs, but we noticed a spike in interest and chatter around files referencing the company. The setup here felt different because the exposed information could potentially grant broad access to customer environments managed by **HESOYAM CLOUD**, amplifying the blast radius considerably.

### The Cloud Provider Leak: 12,652 Credentials Exposed in Telegram Channel

A stealer log surfaced in a Telegram channel on **July 1, 2025**, exposing **12,652 records** tied to **HESOYAM CLOUD**. The leaked information includes a mix of endpoints, email addresses, API host addresses, and, critically, plaintext passwords. The fact that passwords were stored in plaintext significantly increases the risk of account compromise and lateral movement within affected systems. This incident underscores the ongoing threat posed by stealer logs, which are often the result of malware infections on developer workstations or compromised build servers. The ease with which these logs are disseminated via platforms like Telegram means that sensitive credentials can quickly fall into the wrong hands.

**Breach Stats:**

* **Total records exposed:** 12,652
* **Types of data included:** Email Addresses, Plaintext Passwords, URLs (API Host Addresses)
* **Sensitive content types:** API Access Credentials
* **Source structure:** Stealer Log
* **Leak location(s):** Telegram Channel

This incident is reminiscent of previous breaches involving exposed credentials for cloud service providers. While we don't have direct confirmation of the specific stealer family involved, the characteristics of the log file suggest it could be related to a variant of the **RedLine Stealer** or **Vidar Stealer**, both of which are commonly used to harvest credentials from compromised systems. There have been reports of increased targeting of cloud infrastructure providers, likely driven by the potential for significant downstream impact on their customers. One Telegram post claimed the files were "from a workstation used to manage customer cloud environments."

Email · Addresses · Plaintext · Password · Urls