We Found the 4.3KK Streaming UHQ Base: Here’s What Leaked

While reviewing newly uploaded Telegram channel data, HEROIC analysts came across a file named "4.3KK Streaming UHQ Base," with underlying records dated April 2, 2023. On closer inspection, the dataset held 4,355,385 records, each one an email address, a plaintext password, and the URL of the streaming or media account it unlocks.

Why the Streaming UHQ Base Leak Is Dangerous

What makes this discovery concerning isn't just the size, it's how usable the data is straight out of the box. Every password is stored in plain text and matched to a specific login URL, meaning an attacker doesn't need any technical skill to start testing accounts the moment they get their hands on the file.

What Was Exposed

• Email addresses
• Plaintext passwords
• Login URLs for the streaming accounts affected

Why This Matters

With 4,355,385 accounts in play, the risk extends well past streaming service access. Anyone in this dataset who reused their password on email, banking, or shopping sites faces a real chance of credential stuffing, account takeover, or identity theft stemming from a password they thought was low-stakes.

How Stealer Logs Work

This file is a stealer log, the product of malware infections on individual victims' devices rather than a breach at any single streaming company. The malware harvests saved passwords directly from the browser on an infected machine and exports them into a log file, which sellers then sort by category, in this case bundling entries tied to streaming logins into one "UHQ" (ultra high quality, in seller slang) base for buyers to purchase.

Check If You Are Affected

If you use streaming or media accounts online, it's worth finding out whether your login was part of this discovery. HEROIC's free breach scanner checks your email against more than 400 billion breached records, including this leak, so you can see your exposure in seconds and update any passwords that need it.