Search Your Email: The butterfly_logs Dump Exposed 16,738 Accounts

In June 2025, a stealer log file known as butterfly_logs 591count was uploaded by a Telegram user, putting the personal and credential data of 16,738 individuals at risk. The leaked dataset included email adresses, plaintext passwords, and URLs scraped directly from infected devices. Stealer logs like this one are among the most dangrous types of breach data because they capture live, in-session credentials before encryption can protect them.

Why This Is Dangerous

Unlike database breaches that expose hashed passwords, stealer logs capture credentials as they are entered. This means the passwords in this dataset are plaintext and immediately usable by anyone who purchases or obtains the log. Threat actors regularly buy and sell these files on private Telegram channels, making the window of exposure extremely short. If your credentials appear in butterfly_logs 591count, attackers may have already attempted to access your accounts.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (sites visited or accessed at the time of infection)

Why This Matters

Plaintext passwords paired with email addresses are the most actionable form of stolen data. Cybercriminals use these credentials in credential stuffing attacks, testing them across hundreds of popular websites and services in minutes. If you reuse passwords across multiple platforms, a single exposure like this one can cascade into a full account takeover across your digital life. The presence of URLs in this dataset also reveals which services the affected users were accessing, giving attackers a roadmap for where to strike first.

How Stealer Log Breaches Work

Stealer logs originate from malware infections, typically delivered through phishing emails, malicious downloads, or compromised software. Once installed on a victim's device, the malware silently records keystrokes, captures browser-saved passwords, and logs active sessions. The harvested data is then bundled into log files and sold or shared on underground forums and private Telegram channels. The butterfly_logs 591count file is one of hundreds of such logs that surface each month, each containing real credentials from real people who had no idea their device was compromised.

Check If You Are Affected

HEROIC's free breach scanner searches over 400 billion records, including stealer log datasets like this one. Enter your email address to instantly find out whether your credentials were exposed in the butterfly_logs 591count upload or any other known breach. Early detection is the fastest way to lock down your accounts before attackers can exploit your data.