Dark Web Alert: 750,472 Passwords Leaked via TxtBasePortal

In October 2025, HEROIC's dark web monitoring team traced a stealer log dump called "txtbaseportal - FREE OCT" back to a Telegram channel. Intelligence gathered from the file shows 750,472 records, each containing a website, email address, and plaintext password captured from an infected device.

Why This Is Dangerous

Dark web intel teams track logs like this one because of how fast they spread once released. A file labeled "free" and tied to a specific month gets passed around Telegram and underground forums quickly, often ending up mirrored across multiple channels within days.

That means the true number of people who have already downloaded and copied this data could be far higher than the original upload suggests, making the exposure difficult to fully contain.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the sites each login belongs to

Why This Matters

A dump this size gives attackers plenty of raw material for credential stuffing against major websites, since many people reuse the same password across multiple accounts. Once a login works, it usually leads to account takeover, where the attacker locks out the real user and takes control.

From that point, the path to identity theft and financial fraud is short, especially if the exposed account is tied to email, banking, or payment services.

How Stealer Logs Work

Infostealer malware infects a device through a fake download, cracked software, or malicious attachment. Once installed, it silently pulls saved browser passwords and autofill data, then compiles it all into a text file called a log.

Portal-style dumps like this one are often distributed through dedicated channels that continuously post new logs, giving cybercriminals a steady, ongoing supply of fresh credentials to explioit.

Check If You Are Affected

HEROIC's dark web monitoring tracks leaks like this one as soon as they surface. Use our free breach scanner to check your email against more than 400 billion exposed records and find out in seconds if your credentials are part of this dump or any other known breach.