qdpcs.com Breach Exposes 18,073 U.S. Forum Accounts with MD5 Hashes

HEROIC's DarkHive intelligence system discovered the qdpcs.com data breach, exposing 18,073 records. The breach occured in August 2018, affecting users of this now-defunct U.S.-based general information forum website. Leaked data includes email addresses and MD5 password hashes, which are among the most easily cracked hashes available, enabling attackers to rapidly recover plaintext passwords from the exposed records.

Why This Is Dangerous

MD5 is a cryptographically broken hashing algorithm that has been deprecated for password storage for over a decade. Attackers crack MD5 hashes in seconds or minutes using precomputed rainbow tables and modern GPU hardware. With 18,073 U.S. forum user accounts exposed, victims face credential stuffing attacks against thier email accounts, social media profiles, and any other services where they reused the same password from qdpcs.com. Even though the forum itself is now defunct, the email and cracked password pairs remain active attack tools.

What Was Exposed

• Email Address
• Password Hash (MD5)

Why This Matters

Forum and community website users often register with personal or work email addresses and reuse passwords across many platforms. Cracked qdpcs.com credentials can be used to access email accounts, which then become master keys for resetting passwords on banking, social media, and corporate platforms. Identity theft risk from this breach remains active as long as affected users have not changed thier passwords on other services that shared the same credential combination.

How Database and Combolist Breaches Work

A database breach occurs when attackers gain unauthorized access to a platform's stored user records. Once extracted, MD5 password hashes are fed into cracking tools that rapidly test millions of hash combinations per second against precomputed databases. Recovered passwords are compiled into combolists that circulate on criminal forums and Telegram channels, where automated tools test each pair against active services at scale until valid account access is found.

Check If You Are Affected

HEROIC offers a free identity scanner that searches over 400 billion records, including data from breaches like qdpcs.com. Visit heroic.com to scan your email address and find out if your information was exposed.