The zet_cloud 2 Leak Happened in 2023. The Credentials Are Still Circulating.

In April 2023, HEROIC analysts identified a stealer log file that had been quietly uploaded to Telegram by an anonymous user. The file, labeled "FREE zet_cloud 2," contained 944 records pulling together endpoint credentials, email addresses, API host details, and plaintext passwords harvested from infected machines. The data sat in circulation long before most affected users had any idea their credentials were out in the open.

Why Stolen Endpoint Credentials Are Dangerous

This type of breach is particularly concerning because the data was not pulled from a single website. Stealer logs collect everything saved on a device, meaning attackers recieve a ready-made dossier on each victim. With plaintext passwords and matching email addresses in hand, a bad actor can attempt to log into email accounts, cloud storage, banking portals, and corporate systems with very little effort.

The inclusion of API host details makes this even more serious for anyone with developer or business accounts. API credentials can provide backend access to applications, services, and data pipelines that go far beyond a single user account.

What Was Exposed in the zet_cloud 2 Stealer Log

• Email addresses
• Plaintext passwords (unencrypted, immediately usable)
• URLs and endpoint data
• API host information

Why This Matters for Account Security

When passwords are exposed in plaintext, there is no cracking required. Attackers can take those credentials and run them against dozens of other platforms in what is known as credential stuffing. If you reuse passwords across sites, a single leaked login can cascade into account takeovers across email, social media, financial services, and workplace tools.

The combination of email addresses and working passwords also makes phishing and social engineering attacks far more convincing. Criminals can craft messages that appear to come from services you actually use, because they already know which services those are from your endpoint data.

How Stealer Log Breaches Work

Stealer logs originate from malware installed on a victim's device, often through phishing emails, malicious downloads, or compromised software. Once installed, the malware silently collects saved passwords from browsers, desktop applications, and system credential stores. It also captures session cookies, autofill data, and any API keys or tokens stored locally.

The collected data is then packaged into log files and sold or distributed freely on platforms like Telegram and dark web forums. The "FREE" label on this particular file indicates it was distributed at no cost, meaning the data was likely accessed by a very large number of threat actors before it was ever flagged or removed.

This is what makes stealer logs so persistant as a threat. Even after the malware is removed from a device, the data it collected continues to circulate indefinately across criminal networks.

Check If Your Credentials Were Exposed

If you beleive your email or passwords may have been caught up in this or any other breach, HEROIC's free breach scanner can check your information against a database of over 400 billion compromised records. It takes seconds and requires no account to get started.

Search your email at HEROIC.com to see if your data has appeared in known breach files, including stealer logs like this one.