HEROIC's DarkHive intelligence team caught a stealer log file moving openly through Telegram in April 2026. The file, labeled Wako_Cloud_2, held 8,771 compromised records from users in the United States. Every record in the file was complete: an email address, a working password, and the URL of the service where those credentials were collected. It went live on April 1, 2026. Anyone subscribed to the channel could download it immediately.

What made this file particularly dangerous is not the size of it. It is what was inside. The passwords are stored in plaintext. No hashing. No encryption. No step between opening the file and attempting a login. That combination of accessibility and readability is exactly what attackers look for.

What This Means for Anyone in the File

Credential stuffing is the immediate threat. Automated tools consume files like Wako_Cloud_2 and begin testing every email-and-password pair against banking portals, corporate email systems, cloud platforms, and e-commerce sites. The process runs at scale with minimal effort on the attacker's side. Most people reuse passwords across multiple services. One match here can unlock accounts they have never thought to secure.

Beyond automated attacks, individual threat actors in the same Telegram channel can simply scroll through the list manually and pick targets. A recognizable corporate email domain paired with a weak password is all someone needs to attempt a business email compromise or pivot into a company's internal systems.

• Credential stuffing against banking and financial accounts
• Account takeover across email, cloud storage, and SaaS platforms
• Corporate network intrusion via compromised employee credentials
• Identity theft using recovered email access

What Was in the Wako_Cloud_2 File

• Email addresses linked to personal and professional accounts
• Plaintext passwords stored with zero protection
• URLs and API endpoints pinpointing the exact services that were targeted

How Infostealer Malware Builds Files Like This

Stealer malware does not announce itself. It arrives through a phishing email disguised as a routine notification, a software installer bundled with something that looked legitimate, or a browser extension that seemed harmless. Once it is running on a device, it scans everything it can reach: saved passwords in every browser profile, active session cookies, credentials stored by applications, and sometimes crypto wallet files.

All of that data gets packaged into a structured log file and automatically uploaded to a Telegram channel. From the attacker's perspective, it is a passive income stream. From the victim's perspective, there is usually no sign anything happened at all. The malware is built to be quiet. Most people in a stealer log like this one had no idea their device was ever touched.

By the time the Wako_Cloud_2 file appeared on Telegram, the damage had already been done. The malware had run, the data had been exfiltrated, and the log was assembled and waiting to be posted.

Employees and Corporate Accounts Are at Elevated Risk

Stealer logs frequently contain work email addresses. When an employee's personal device is infected, the malware captures every credential it finds, including logins to corporate systems, internal tools, and business platforms. A single compromised employee credential inside a file like Wako_Cloud_2 can give an attacker a foothold into a company's infrastructure.

IT and security teams should cross-reference this breach against company email domains. If a corporate address appears in this dataset, treat it as an active credential compromise and initiate a password reset and access audit immediately.

Find Out If Your Email Is in This File

HEROIC's breach scanner searches your email address against a database of more than 400 billion exposed records, including the Wako_Cloud_2 stealer log. A scan takes seconds and is free. If your information is in this file, you will know right away so you can act before an attacker does.

Run your free scan at HEROIC.com.