Duab Hmoob Tojsiab Data Breach Exposes 90K Vietnamese Users

DarkHive discovered a data breach affecting Duab Hmoob Tojsiab, a now-defunct Vietnamese personal blog and social sharing site. The breach exposed 90,513 records including email addresses and plaintext passwords, with data leaked in August 2018. Even though the platform is no longer active, the exposed credentials remain a persistent threat because users who registered years ago often continue using the same passwords on active accounts across other platforms.

Why This Is Dangerous

Plaintext passwords allow attackers to immediately use stolen credentials without any cracking or decoding. With 90,513 email and password pairs fully exposed, this dataset fuels large-scale credential stuffing operations against any platform that accepts email-based login. Vietnamese internet users often maintain accounts on popular global platforms like Google, Facebook, and Zalo using the same credentials, meaning this single breach can cascade into compromise of multiple active accounts if passwords were reused.

What Was Exposed

• Email Address
• Plaintext Password

Why This Matters

Social platform and personal blog breaches are particularly impactful because users register out of personal interest and rarely monitor those accounts for security compromises. The 90,513 exposed credentials from Duab Hmoob Tojsiab entered combolist networks where they continue to be traded and reused in credential stuffing campaigns years after the original breach occured. Users who reused thier password on seperate platforms like email or banking are at risk of account takeover even long after they may have forgotten they ever registered on this site. This is a common pattern with defunct websites whose data remains perpetually available in underground markets.

How Database Breach Works

A database breach occured when attackers exploited vulnerabilities in Duab Hmoob Tojsiab's web infrastructure and extracted the full user database. The decision to store 90,513 passwords in plaintext rather than using any cryptographic hashing meant the stolen data was immediately actionable. This data entered combolist distribution networks on dark web forums and Telegram channels, where personal blog and social platform credentials are bundled with similar breaches and traded at scale for use in automated credential stuffing attacks.

Check If You Are Affected

HEROIC offers a free identity scanner that checks your email address against thousands of known data breaches including the Duab Hmoob Tojsiab breach. Visit heroic.com to run a free scan and find out if your credentials were exposed. If you registered on this Vietnamese social platform, check whether you are still using the same password on any active accounts and change those passwords immediately. Enable two-factor authentication wherever available to protect against credential stuffing attacks even when passwords are compromised.