250 Stealer Log Files Shared Free on Telegram in the CROWNLOGCLOUD September 2023 Breach

HEROIC analysts documented a stealer log file posted to Telegram in September 2023. The file, shared under the label "06 SEPTEMBER CROWNLOGCLOUD 250 PCS," contained 2,434 compromised records harvested from devices infected with infostealer malware. Each record included an email address, a plaintext password, and a URL pointing to cloud services or API infrastructure. The log was distributed at no cost on Telegram, giving criminal actors immediate access to these credentials the moment it was posted.

Why This Is Dangerous

Attackers who obtain plaintext passwords bundled with the exact URLs they authenticate to have everything they need to log straight in. There is no cracking, no guessing, and no technical skill required. Cloud and API credentials are especialy high-value targets because compromising one can expose an entire service layer, including customer records, internal tooling, and stored authentication tokens for downstream platforms.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (including cloud endpoints and API hosts)

Why This Matters

Each set of credentials from the CROWNLOGCLOUD breach represents a real person whose accounts are at risk. Credential stuffing bots systematically test stolen login pairs against hundreds of websites and apps. Where passwords are reused, a single exposed credential can lead to account takeover across banking platforms, email services, and e-commerce sites. The downstream consequences for victims include identity theft, fraudulent transactions, and the long process of recovering compromised accounts.

How Stealer Logs Work

Infostealer malware is typically deployed through phishing emails, fake downloads, or malicious browser plugins. After infecting a device, it quietly collects saved passwords, browser cookies, form-fill data, and any credentials the user types. The malware packages this data into a compact log file and transmits it to the attacker. These logs are then shared in bulk on Telegram groups and dark web forums, where they feed into large-scale credential stuffing operations targeting real accounts.

Check If You Are Affected

If your email or password was captured in the 06 SEPTEMBER CROWNLOGCLOUD 250 PCS Telegram stealer log breach, your accounts could be under attack right now. Use the HEROIC free scanner to search your email against more than 400 billion compromised records. It only takes a moment to find out wether your credentials have been exposed.