Spain Base Leak: 49,188 Accounts Are Ready to Steal

HEROIC's threat intelligence operations detected a stealer log labeled "50K Spain Base" circulating on Telegram, first appearing in March 2023. This dataset exposes 49,188 credential records that specifically target Spanish users, providing attackers with a ready-made toolkit for mass account compromise. Each record contains everything needed to log in as the victim.

Plaintext Passwords Mean Immediate Danger

Every single password among the 49,188 records in this dataset is stored in plaintext. There is no hashing algorithm to reverse and no encryption key to obtain. Attackers who download this file can immediately see and use every password as-is. For the tens of thousands of Spanish users in this leak, the window for protecting their accounts began closing the moment this file appeared on Telegram.

What Was Exposed

• Email Addresses — accounts belonging to Spanish users, serving as login identifiers across multiple platforms
• Plaintext Passwords — fully visible, unprotected credentials that require no decryption to exploit
• URLs — the exact websites and services where each set of credentials was captured

49,188 Credentials Fuel Massive Credential Stuffing Campaigns

A dataset of nearly 50,000 working email-password combinations is a goldmine for credential stuffing operations. Attackers use automated tools to test each pair against popular banking platforms, email providers, government portals, and e-commerce sites used in Spain. Given that studies consistently show over 60% of users reuse passwords across services, a large portion of these 49,188 credentials will successfully unlock additional accounts beyond the ones originally compromised.

The Infostealer Malware Behind This Dataset

Stealer logs like the 50K Spain Base are produced by infostealer malware that infects personal computers and mobile devices. The malware spreads through phishing emails with malicious attachments, fake software downloads, and compromised websites. Once installed, it operates invisibly, extracting passwords saved in web browsers, intercepting form data as users log in, and stealing session cookies. The harvested credentials are organized by geography and uploaded to dark web channels where they are traded and redistributed. This Spain-focused dataset represents one segment of a much larger global operation.

Check If Your Credentials Were Exposed

HEROIC operates one of the world's largest breach intelligence databases, containing over 400 billion records from data breaches, stealer logs, and dark web sources. Use the HEROIC breach scanner to determine whether your email or password appears in the 50K Spain Base dump or in any other compromise. Acting quickly after discovering an exposure can mean the difference between keeping your accounts secure and suffering a full account takeover.