How the Wako_Cloud2 Telegram Upload Exposed 16,613 Stolen Logins

HEROIC analysts identified a stealer log file in March 2026 that was uploaded to Telegram by an anonymous user operating under the name Wako_Cloud2. The file contained 16,613 records gathered from infected devices, including email addresses, plaintext passwords, and endpoint URLs. Stealer logs like this one are collected quietly in the background on comprimised machines and then sold or freely shared in private channels where other criminals can use them.

Why This Is Dangerous

Stealer logs are not just a list of usernames and passwords. Each record in this dataset came from a real person's device. The attacker's malware sat silently on those machines and recorded every credential that was typed or saved. Because the passwords here are in plaintext, anyone who downloads this file can immediately try them on email accounts, banking apps, and other services without any extra steps.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (the specific sites where credentials were captured)

Why This Matters

When passwords are exposed in plaintext, the damage spreads fast. Attackers run those credentials against dozens of popular websites in a process called credential stuffing. If you reuse the same password across multiple accounts, a single stealer log entry can unlock your email, your bank, your social media, and more. Identity theft and finantial fraud are common outcomes, and victims often don't find out until significant damage has already been done.

How Stealer Logs Work

A stealer log is the output of a type of malware called an infostealer. These programs are typically delivered through phishing emails, fake software downloads, or malicious ads. Once installed on a device, the malware runs silently and collects saved browser credentials, cookies, form data, and sometimes even screenshots. All of that data gets bundled into a log file and sent back to the attacker. Those log files are then traded, sold, or posted in Telegram channels and dark web forums where other bad actors can download and exploit them. The person whose device was infected may never know it happened.

Check If You Are Affected

HEROIC's free breach scanner searches across more than 400 billion records to tell you if your email address or credentials have appeared in known stealer logs and data breaches. If your information was part of the Wako_Cloud2 upload or any similar dataset, you deserve to know. Run a free scan today and take back control of your digital security.