NEXUCLOUD Breach Report: 1,548 Accounts Compromised by Malware

HEROIC found the NEXUCLOUD stealer log on December 24, 2025, a file exposing 1,548 records containing email addresses, plaintext passwords, and the URLs of services where those credentials were harvested from compromised devices. The log was distributed via a Telegram channel as part of an infostealer operation targeting users worldwide.

Why the NEXUCLOUD Breach Is Dangerous

Attackers holding 1,548 plaintext credentials can attempt account takeovers across email providers, financial institutions, and e-commerce sites, using stolen logins to bypass authentication without any cracking required.

What Was Exposed in the NEXUCLOUD Leak

• Email addresses
• Plaintext passwords
• URLs (the exact services where credentials were captured from infected devices)

Why This NEXUCLOUD Data Puts You at Risk

Stealer log credentials enable credential stuffing, account takeover, identity theft, and financial fraud. Because passwords are in plaintext, attackers can immediately test them across multiple platforms without any decryption effort.

How Stealer Log Works

Infostealer malware typically spreads through phishing campaigns, malicious downloads, or cracked software. Once installed on a victim's device, it harvests saved browser credentials, session cookies, and authentication tokens. The captured data is packaged into log archives and traded on Telegram channels and dark web marketplaces.

Check If Your Data Was Exposed

HEROIC operates one of the world's largest breach databases, covering more than 400 billion leaked records. Use HEROIC's free breach scanner to check if your email address or credentials appeared in the NEXUCLOUD leak or thousands of other breaches in our database.