125,479 Mialojamiento Plaintext Passwords and Emails

HEROIC analysts recieved intelligence in August 2018 about a database breach affecting Mialojamiento, a Spanish web hosting service tied to 1&1 (IONOS). The exposed dataset contained 125,479 records, including email addresses and plaintext passwords stored with no encription whatsoever. The breach went largely unnoticed at the time but has since resurfaced across underground forums, putting affected users at continued risk.

Why Plaintext Passwords Put Mialojamiento Users at Immediate Risk

When passwords are stored in plaintext, attackers require zero additional effort to use them. Unlike hashed credentials that need to be cracked, these passwords are accesible immediately and ready to be tested against email providers, banking portals, and any other service where a user may have reused the same login. The risk is particularly severe for a web hosting account breach, since those accounts often control websites, email servers, and databases.

What Was Exposed in the Mialojamiento Breach

• Email Address
• Plaintext Password

Why the Mialojamiento Breach Still Threatens Users Today

Breaches involving plaintext passwords have an unusualy long attack window. Credential stuffing tools can instantly test these username and password pairs across thousands of sites. Even users who have since abandoned their Mialojamiento account may find that attackers are logging into their Gmail, bank, or social media accounts because they believe nobody would still care about a 2018 Spanish hosting site. Identity theft and account takeover are the most immediate dangers.

How Database Breaches Work

A database breach occurs when an attacker gains unauthorized access to a backend database, typically by exploiting vulnerabilities in web applications, misconfigured servers, or compromised admin credentials. Once inside, they extract tables containing user records. In this case, the Mialojamiento database stored user credentials in plaintext, meaning the moment the database was accessed, every password was immediately readable with no cracking required.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across more than 400 billion records to tell you exactly what data of yours has been exposed. Run a free scan now at HEROIC.com and find out if your email or credentials appeared in the Mialojamiento breach or any other known data leak.