Researchers Log Spain-Based Stealer Leak of 44,729 Accounts

On April 24, 2023, a Telegram user uploaded a stealer log file described as a "Spain base," a collection of credentials harvested from infected devices located in or connected to Spain. Security researchers cataloging the file count 44,729 exposed records, each containing an email address, a plaintext password, and the URL of the site the login belongs to.

Why a Country-Specific Stealer Log Is Still a Global Risk

Labeling a log by country tells you where the infected devices were, not who is safe from it. Email providers, banking portals, and shopping sites used in Spain are the same platforms used everywhere else, and the credentials in this file work exactly the same way regardless of where a buyer is located.

What Was Exposed in the Spain Base Log

• Email addresses
• Plaintext passwords
• URLs of the accounts tied to each login

Why This Matters for the 44,729 People in This File

Every record in this log is a working, unencrypted login, ready to be tested the moment a criminal downloads the file. Because plaintext passwords require no cracking, attackers can immediately run them through credential stuffing tools against banking, email, and social media sites. Anyone who reused one of these passwords elsewhere is exposed to account takeover, identity theft, and financial fraud that can extend well beyond the original account.

How This "Base" of Stolen Logins Was Built

A "base" in stealer log terminology simply means a compiled collection of stolen credentials, usually organized by the region, device, or malware campaign that produced them. Infostealer malware infects a victim's computer, often through pirated software or a malicious download, then quietly copies every saved browser password before sending it back to the attacker. Once enough logins accumulate, they're bundled into a regional file like this Spain base and circulated on Telegram to buyers looking for credentials tied to a specific country.

Check If Your Login Is in This Base

Wherever you're located, it's worth confirming your credentials aren't sitting in a file like this one. HEROIC's free breach scanner checks your email against more than 400 billion leaked records, including regional stealer log bases like this Spain-tagged file, so you can find out in seconds and lock down any account still using an exposed password.