Dark Web Intel: 16K Records From the 3v1t.aihzst.cn Portal Dump

HEROIC analysts detected a dark web listing on March 26, 2025, advertising a database dump attributed to 3v1t.aihzst.cn, a Chinese-language online portal identified internally as a backend login system. The leaked dataset covered 16,185 user records and included a rich set of personal identifiers: email addresses, first and last names, gender, dates of birth, and phone numbers. The structured nature of the dump points to a direct extraction from a relational database rather than a scraping or phishing operation.

Why This Chinese Portal Leak Is a Serious Threat

Online portal systems like this one act as gateways to backend services, often holding user profiles that aggregate identity data across multiple functions. When email addresses, full names, phone numbers, birthdates, and gender are all exposed together, attackers have everything they need to build convincing false identities or to target real victims with precision. This combination of data is frequently used to bypass identity verification processes at banks, government portals, and mobile carriers. The addition of birthdate data is particulary damaging because it serves as a security answer on many platforms and is used in credit and loan applicaiton verification.

What Was Exposed in the 3v1t.aihzst.cn Breach

• Email Address
• First Name
• Last Name
• Gender
• Birthday
• Phone Number

Why This Matters for Portal Users

Breaches from online portals carry long-term consequences because the data is rarely outdated. Email addresses and phone numbers remain in use for years, making victims vulnerable long after the breach date. Credential stuffing attempts using the exposed emails can succeed whenever a victim reuses a password across accounts. Account takeover follows when attackers gain access to email inboxes or social accounts tied to the same address. Identity theft is a significant risk given the depth of personal detail exposed. Financial fraud is a downstream threat, particularly for users whose identity data is combined with information from other breaches circulating on the same dark web forums.

How a Database Breach Through an Online Portal Happens

Online portal systems are common targets for attackers because they are internet-facing, often used by large numbers of people, and frequently manage sensitive identity data. A database breach through a portal typically begins with an attacker identifying a vulnerability in the login system itself, such as SQL injection, insecure API endpoints, or weak authentication controls. Once a foothold is gained, the attacker accesses the underlying database and exports user records. These records are then moved off the system quietly, often in compressed files, before being listed on dark web markets or shared on hacking forums. Backend portal breaches are especially concerning because organizations often do not detect the intrusion until the data is already publicly available.

Check If You Are Affected by the 3v1t.aihzst.cn Breach

If you have ever registered on the 3v1t.aihzst.cn portal or associated services, your personal details may be part of this dataset. HEROIC's free breach scanner searches over 400 billion compromised records and can tell you within seconds if your email address has appeared in known breaches. Run a free scan now and take action to protect any accounts using the same credentials.