How to Check if ReimannCloud 11-17 Exposed Your Email

HEROIC discovered 3,124 records exposed in the ReimannCloud 11-17 stealer log breach on April 5, 2023. A Telegram user uploaded the log archive, which bundled endpoint metadata, email accounts, API hosts, and plaintext passwords siphoned from infected devices.

Why This Stealer Log Is Dangerous

Stealer logs concentrate high-value credentials in one searchable file. Because the data is indexed by URL and paired with plaintext passwords, attackers can filter for banking, crypto, or corporate targets in seconds. Multi-factor authentication is often the only remaining barrier.

What Was Exposed in ReimannCloud 11-17

• Login credentials (emails and plaintext passwords)
• Browser cookies and session tokens
• Autofill data including addresses and payment details
• Cryptocurrency wallet files and seed phrases
• System fingerprints and device information

3,124 victims had browser vaults exposed in a single Telegram drop.

Why This Matters

Even if your password was strong, its plaintext copy now sits in an openly shared file. Anyone who downloaded the log can impersonate you on the sites listed beside each credential pair. Defense starts with knowing which accounts are at risk.

How a Stealer Log Like ReimannCloud 11-17 Works

Infostealer malware infects a machine via a cracked installer, phishing email, or malicious browser extension. It extracts saved passwords, cookies, and crypto wallets, zips them into a log folder, and uploads the archive to a Telegram channel for resale or free distribution.

Check If You Are Affected

HEROIC monitors the world's largest breach database with over 400 billion compromised records. Run your email through HEROIC's free search, change every reused password, and enable multi-factor authentication on email, banking, and cloud accounts first.