Identity Theft Just Got Easier Because of the ShadowLogs_Cloud Breach: 7,512 People at Risk

HEROIC analysts discovered the ShadowLogs_Cloud stealer log on November 7, 2023, when a Telegram user uploaded 519 log files containing 7,512 stolen records from compromised devices. The log included plaintext passwords, email addresses, and URLs -- with a clear focus on cloud-related services and infrastructure credentials. That specific targeting is what made this log stand out: rather than a random assortment of consumer accounts, ShadowLogs_Cloud appeared to deliberately target cloud environment access points. Most victims never recieve any notification that their credentials were included in the leak.

Why the ShadowLogs_Cloud Leak Is Dangerous

When a stealer log targets cloud infrastructure, the consequences extend far beyond a single compromised account. Cloud credentials can give attackers access to entire environments -- storage buckets, virtual machines, databases, and internal tools. The plaintext passwords in ShadowLogs_Cloud require no cracking; an attacker can plug them directly into a cloud console and attempt to log in. If even a fraction of the 7,512 exposed accounts belong to developers or system administrators, the downstream impact for those organizations could be severe. Credential stuffing attacks against cloud platforms can lead to data exfiltration, ransomware deployment, and full infrastructure takeover.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs (including cloud service login pages and API endpoints)
• Cloud infrastructure access credentials

Why This Matters

The name ShadowLogs_Cloud was not accidental. The targeted nature of the data -- oriented around cloud services -- suggests this was a curated collection rather than a generic stealer log dump. Once cloud credentials are in criminal hands, they move quickly through underground markets. Attackers who buy or obtain these credentials can spin up computing resources for cryptomining, use compromised accounts to launch phishing campaigns, or quietly exfiltrate customer data. Organizations that rely on cloud infrastructure without enforcing multi-factor authentication are especially vulnerable. Even if the original password has since been changed, session tokens captured alongside those credentials may have already been used to establish persistent access. It is also worth noting that stealer logs distributed on Telegram are often downloaded hundreds of times before being flagged, meaning the data in ShadowLogs_Cloud was likely widely circulated. A seperate check through HEROIC is the most reliable way to confirm exposure.

How Stealer Log Breaches Work

Stealer logs are created by infostealer malware that infects a victim's device and runs silently in the background. The malware harvests every password saved in a browser, records login credentials as they are typed, captures session cookies, and logs which websites and cloud services are accessed. All of this data is packaged into a log file and transmitted to the attacker. The attacker then distributes the file through private Telegram channels or dark web forums, either for sale or freely. The infection often occured through a phishing email, a malicious download, or a compromised software installer. Victims typically have no idea their device was infected until their accounts begin showing unauthorized activity -- if they notice at all.

Check If You Are Affected

HEROIC offers a free scanner that searches through more than 400 billion leaked records -- including stealer logs like ShadowLogs_Cloud -- to tell you if your email address or passwords have been exposed. Because cloud-targeted stealer logs are often overlooked by general breach notification services, it is worth running a check specifically through HEROIC. Enter your email at HEROIC's free breach scanner to see if your credentials appeared in this breach or any of the hundreds of other data leaks in our database.