If You Reuse Passwords, the liderazgoymercadeo Breach Should Worry You

HEROIC analysts uncovered a breach tied to liderazgoymercadeo, a now-defunct Spanish blog that exposed 86,932 user records back in August 2018. What makes this one partcularly alarming is not just the size of the leak, but what was inside: email addresses paired with passwords stored in plain, unencrypted text. Anyone who got their hands on this data did not need to crack anything. The credentials were ready to use the moment the database was stolen.

Plaintext Passwords Are a Direct Key to Your Other Accounts

When passwords are stored in plaintext, attackers can take them and try them immediately on other sites. Email and password combinations are the exact pairing that banks, streaming services, and work portals ask for at login. Cybercriminals run these credentials through automated tools across hundreds of sites at once, a technique called credential stuffing. Because so many people reuse passwords, even a breach from a small Spanish blog can open doors to accounts that are far more valueable than the original site.

What Was Exposed in the liderazgoymercadeo Breach

• Email Address
• Plaintext Password

Why Plaintext Password Leaks Have Long-Term Consequences

This breach occured in 2018, but the data is still circulating. That is one of the most important things to understand about breaches: they do not expire. Credentials that leaked years ago continue to appear in fresh credential stuffing attacks today. If you registered on this site and used that same password anywhere else, your other accounts are still at risk right now. Financial accounts, email inboxes, and workplace tools are all targets when attackers get hold of reused credentials.

How a Database Breach Works

A database breach happens when an attacker gains unauthorized access to the back-end database of a website or application. This can happen through SQL injection, weak server configurations, stolen admin credentials, or unpatched software vulnerabilities. Once inside, the attacker can download the entire contents of the database, including every user account stored there. In the case of liderazgoymercadeo, the database contained email addresses and passwords that were never encrypted, meaning there was no additional barrier between the attacker and usable login credentials.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across more than 400 billion records to tell you whether your email address appeared in this breach or others like it. If your credentials were part of the liderazgoymercadeo leak, you need to change that password everywhere you used it and turn on two-factor authentication wherever possible. Run your email through HEROIC's scanner now to find out where you stand.