176589 Joi3 Accounts Leaked With Plaintext Passwords

HEROIC analysts found the Joi3 database circulating across dark web forums and underground trading channels in April 2021. The now-defunct United States-based website suffered a database breach that exposed 176,589 user records. The leaked data included email addresses and plaintext passwords, meaning every affected user's credentials were recieved by threat actors in an immediately usable form, requiring no cracking or decryption.

Why Plaintext Passwords From Joi3 Create Serious Account Takeover Risk

Because Joi3 stored passwords without hashing or encryption, the 176,589 exposed credential pairs were accessible to any attacker who obtained the dump. Credential stuffing tools can automatically test these email and password combinations against banking platforms, email providers, corporate login portals, and other services in minutes. The sensitive nature of the site means affected users are also at elevated risk of targetted extortion or phishing attacks.

What Was Exposed in the Joi3 Breach

• Email Address
• Plaintext Password

Why the Joi3 Data Leak Remains a Threat Even After the Site Closed

The site is no longer active, but the leaked credentials are particularly dangerous because the email addresses reveal which users registered on the platform. This combination enables targeted phishing, blackmail attempts, account takeover across reused passwords, and identity fraud. These attacks occured long after the original April 2021 breach date and the data continues to trade in dark web markets today.

How a Database Breach Works

A database breach occurs when an attacker gains unauthorized access to a website's backend data store through methods such as SQL injection, unpatched software vulnerabilities, or stolen administrative credentials. Once inside, they export user account tables. When a site stores passwords in plaintext rather than using secure hashing algorithms such as bcrypt or scrypt, the stolen data is ready to use for account takeover attempts with no additional processing required.

Check If Your Data Was Exposed

HEROIC's free breach scanner checks your email address against a database of over 400 billion exposed records, including the Joi3 breach. Run a free scan now to find out if your credentials were part of this leak and get immediate steps to secure any accounts that share the same password.