Search Your Email: AYANKOUJI PRIVATE 594 Part 1 Exposed 9,468 Accounts

In October 2025, HEROIC analysts documented a stealer log upload to a public Telegram channel attributed to a user operating under the name AYANKOUJI PRIVATE 594 part 1. The dataset was posted on October 31, 2025 and contained 9,468 records harvested from compromised endpoint devices. The exposed data included email addresses, plaintext passwords, and URLs representing the services and login portals associated with each stolen credential. The label "part 1" in the dataset name indicates this is the first installment of a multi-part release, meaning additional records from the same source may have been distributed separately.

Why This Is Dangerous

A stealer log that includes plaintext passwords is immediately dangerous from the moment it is downloaded. Unlike hashed password dumps that require cracking before they can be used, the AYANKOUJI PRIVATE 594 part 1 dataset gave anyone who accessed the Telegram channel 9,468 functional credential pairs with zero additional effort required. The accompanying URLs make each record self-explanatory, pointing attackers directly to the service where each password was used. Attackers do not have to guess which sites to target because the malware already recorded that information at the time of theft. This is as close to a ready-to-use attack kit as credential data gets.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs (associated login portals and API endpoints)

Why This Matters

The AYANKOUJI PRIVATE 594 part 1 dump feeds directly into the credential stuffing pipeline that drives account takeover, identity theft, and financial fraud. Attackers who obtain this dataset can test every email and password pair against dozens of platforms automatically, including banks, email providers, e-commerce sites, and remote access tools. Each successful login is a potential pathway to draining a bank account, hijacking an identity, making fraudulent purchases, or gaining a foothold into a corporate environment. The fact that this release is labeled part 1 also raises the possibilty that the threat actor behind it has additional batches of records from the same infection campaign still to release.

How Stealer Logs Work

Infostealer malware typically infiltrates a device through a phishing email, a malicious browser extension, or a software download that has been tampered with by an attacker. Once active, it operates silently -- scraping saved passwords from browsers, capturing keystrokes, and collecting autofilled credentials, along with the exact URL each one belongs to. All of that harvested material is packaged into a structured log file and exfiltrated to the attacker's server without the victim noticing any change in device behavior. From there, the attacker organizes the logs into named batches and distributes them via platforms like Telegram, where they can reach a large audience quickley and with minimal traceability. The private label in the AYANKOUJI dataset name suggests these logs were initially kept within a restricted channel before being more widely shared.

Check If You Are Affected

Search your email: the AYANKOUJI PRIVATE 594 part 1 dump exposed 9,468 accounts across a range of online services, and if your address is in it, attackers may already be testing your credentials. HEROIC maintains a breach database with over 400 billion records spanning thousands of leaks, stealer logs, and dark web incidents. Visit heroic.com to run a free search on your email address and find out whether your data appeared in this dump or any related release. If it did, change affected passwords immediatley and enable two-factor authentication on every account you can.