Your Passwords May Be Exposed. LunarLogsFree Leaked 14,641 Records.

In July 2025, HEROIC analysts identified a stealer log file uploaded and distributed through Telegram by an anonymous threat actor. The file, tracked under the name LunarLogsFree, contained 14,641 records harvested from compromised endpoints. The data included email addresses, plaintext passwords, and URLs -- the kind of combination that gives attackers an immediate operational advantage. The log circulated for months before being indexed in breach tracking systems. If your device was infected during this period, your credentails may have already been tested against dozens of other platforms.

Why This Is Dangerous

Stealer log files are not ordinary leaks. Unlike database breaches where attackers steal stored records, stealer logs capture data directly from infected devices in real time. That means the credentials in this file were almost certainly valid at the moment they were collected. When attackers recieve a file like this, they do not have to guess -- they have working usernames, real passwords, and the exact URLs where those passwords were used. That allows them to log in to accounts immediately, before victims even know anything went wrong.

What Was Exposed

• Email Addresses -- used as account identifiers across dozens of platforms
• Plaintext Passwords -- captured in unencrypted form, ready for immediate use
• URLs -- the specific websites and services where credentials were harvested

Why This Matters

Most people reuse passwords across multiple sites. That habit becomes a critical vulnerability when a stealer log surfaces. Attackers run a process called credential stuffing -- they take the email and password pairs from this file and test them automatically against banking portals, email providers, shopping sites, and social media platforms. Even if only a fraction of those attempts succeed, the financial and personal damage can be severe. Identity theft, account takeovers, and unauthorized purchases can all follow from a single compromised credential. For the 14,641 people in this file, the risk is not theoretical -- it is active.

How Stealer Log Malware Works

A stealer log is generated by a type of malware called an infostealer. These programs are typically installed on a victim's computer without their knowledge -- through phishing emails, fake software downloads, or malicious ads. Once installed, the infostealer silently collects everything it can find: saved browser passwords, cookies, autofill data, and the URLs associated with each credential. The harvested data is packaged into a log file and sent back to the attacker, or in this case uploaded to Telegram for free distribution. What makes stealer logs especially dangerous is that the data is often collected from many different people across many devices, then bundled together and shared in bulk. The LunarLogsFree label suggests this parcticlar batch was intentionally made freely available to maximize distribution among cybercriminal communities.

Check If You Are Affected

HEROIC offers a free dark web scanner that checks your email address against more than 400 billion compromised records -- including stealer logs like the LunarLogsFree breach. If you have accounts tied to any of the services captured in this log, your credentials may have already been tested against other platforms. It takes only seconds to run a scan. Enter your email at HEROIC.com and find out if your data was exposed in this breach or any other known leak.