HKGolden Breach Exposed 295,974 Plaintext Passwords and Phone Numbers

HEROIC analysts flagged the HKGolden breach during a sweep of forum data circulating on underground trading channels. The incident occured in August 2019 and exposed 295,974 records from the Hong Kong-based community forum, including plaintext passwords, email addresses, phone numbers, usernames, IP addresses, birthdays, and gender information. The use of plaintext password storage meant that every affected user's credentials were immediately readable by anyone who obtained the data.

Plaintext Passwords and Phone Numbers Open the Door to Direct Account Takeover

Because HKGolden stored passwords in plaintext, attackers did not need to crack anything. Every username and password pair in the leak is recieved as a ready-to-use credential. Combined with phone numbers and birthdays, attackers can attempt SIM-swapping attacks, bypass SMS-based two-factor authentication, and impersonate victims across platforms. IP addresses in the data can also help attackers map users' geographic locations and target them with region-specific scams.

What Was Exposed in the HKGolden (高登討論區) Breach

• Email Address
• Phone Number
• Plaintext Password
• Username
• IP Address
• Birthday
• Gender

Why a Forum Breach with Plaintext Passwords Is Still Dangerous Years Later

Data from breaches like HKGolden does not lose its value over time. Forum users who recieved accounts years ago often still use the same email and password combination on banking apps, social media, and workplace systems. The breadth of personal detail in this leak, partcularly the combination of phone number, birthday, and gender alongside login credentials, makes it particularly useful for building detailed profiles suited to identity fraud and targeted social engineering.

How Database Breaches Work

A database breach happens when an attacker gains unauthorized access to a platform's backend data store, typically by exploiting a software vulnerability, an unpatched system, or improperly secured administrative access. Once inside, the attacker exports the user table and any associated personal data. In cases where passwords are stored in plaintext rather than hashed, the stolen data is immediately usable for account takeover without any additional processing.

Check If Your Data Was Exposed

HEROIC's free breach scanner covers more than 400 billion records and can tell you in seconds whether your email address, phone number, or password appeared in the HKGolden breach or any other known data leak. Run a free scan now and find out what's already out there.