One Telegram Post. 699 Device Logs. The FastLogsCloud Dump Had 30,877 Records.

In July 2025, a single Telegram post from a user distributing under the FastLogsCloud label contained 699 bundled device logs and 30,877 exposed records. Each log represented a single infected machine, and together they produced a dataset of plaintext passwords, email addresses, and browser URLs captured directly from those compromised endpoints. HEROIC analysts confirmed the breach and added it to the database on April 18, 2026. The file has been freely available for download since the day it was uploaded, and any threat actor who obtained it can still use those credentials today.

Why This Is Dangerous

Stealer log data does not require cracking or decryption. Every password in the FastLogsCloud 699count file is stored in plaintext, meaning it can be used to log into accounts immediately. Attackers also have the matching URLs, so they know exactly which services each victim was using. This is one of the most actionable types of breach data in existence. A single download of this file gives an attacker everything they need to begin credential stuffing campaigns across email providers, banking portals, social media, and corporate logins. With 30,877 records and months of circulation time, the damage potential from this single Telegram post is substancial.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (browser-saved sites and active service endpoints)

Why This Matters

When a file containing 30,877 plaintext credentials is uploaded to a public Telegram channel, it does not stay private for long. These channels are monitored by thousands of threat actors who download and distribute the data further. Credential stuffing, account takeover, identity theft, and financial fraud can all begin within hours of the upload. Because many people reuse passwords across multiple accounts, a single compromised set of credentials can open the door to a victim's email, bank account, and work systems simultaneously. The FastLogsCloud dataset has been in the wild since July 2025 and there is no mechanisim to recall it or delete it from the hands of those who already downloaded it.

How Stealer Logs Work

Each of the 699 device logs in this file was produced by infostealer malware running silently on a victim's computer. Infostealers are typically delivered through phishing emails, fake software downloads, or malicious browser extensions. Once installed, the malware harvests saved browser passwords, active session cookies, and browsing history in seconds and transmits everything to the attacker's server. The attacker then packages the harvested output by device count, names it with a handle like FastLogsCloud, and uploads it to Telegram for free distribution. The infected users recieve no notification and often have no idea their device was ever compromised. From infection to public distribution, the entire cycle can complete in a matter of days.

Check If You Are Affected

HEROIC's free breach scanner searches across more than 400 billion exposed records, including the FastLogsCloud 699count stealer log, to tell you whether your email address or passwords appear in this breach or any other known dataset. Run your free HEROIC scan now, change any compromised passwords immediately, enable two-factor authentication on all accounts, and monitor for unauthorized activity. Do not assume you were not affected just because you did not receive a notification.