Were You Exposed? 4KK Mix Shopping Leak Hits 3.6M Logins

In January 2023, a stealer log collection titled “4KK Mix Shopping Fresh Base” was uploaded to a public Telegram channel by an anonymous user. The file contained 3,639,557 individual records, each one pairing an email address with a plaintext password and a URL for the site or service the credentials belonged to. This was not a breach of a single company’s servers. It was a bulk collection of login data pulled directly off thousands of infected personal computers, one stolen browser profile at a time.

Why the 4KK Mix Shopping Leak Puts You at Risk

A stealer log like this one is dangerous precisely because it skips the part where a company has to admit it was hacked. Instead, malware sitting quietly on someone’s computer copies whatever is saved in their browser: usernames, passwords, and the web addresses tied to them. Multiply that across millions of infected machines and you get a “fresh base” like this one, ready to be sold, traded, or given away on Telegram to anyone who wants it.

What Was Exposed in This Stealer Log

• Email addresses
• Plaintext passwords (stored and shared with no encryption)
• URLs identifying which sites or services each login belonged to

Why This Matters for Your Accounts

Because the passwords in this log are plaintext and each one is tied to a specific site, criminals do not need to guess anything. They can automate login attempts across banking portals, email providers, and shopping accounts in what is known as credential stuffing. If you reused a password from one of these 3.6 million records anywhere else, every account using that password is exposed to takeover, identity theft, and financial fraud.

How Stealer Log Credential Harvesting Works

Information-stealing malware infects a device through a fake download, a cracked software installer, or a malicious email attachment. Once installed, it quietly copies saved browser passwords, autofill data, and session cookies, then sends everything back to the attacker in a single file called a “log.” Criminals combine thousands of these individual logs into one large “mix” or “fresh base,” then upload it to Telegram channels or dark web marketplaces where it can be downloaded by anyone.

Check If You Were Exposed in This Leak

You do not need to guess whether your email address is sitting in a file like this one. HEROIC’s free breach scanner checks your email against a database of more than 400 billion leaked records, including stealer logs like the 4KK Mix Shopping Fresh Base. Run a free scan now, and if you find a match, change that password immediately and turn on two-factor authentication everywhere it is offered.