The MOONLOGSFREE Leak Means Someone Could Log Into Your Accounts

HEROIC analysts found the MOONLOGSFREE 500pcs file circulating on a public Telegram channel on October 28, 2023. The upload contained 12,944 records, each one representing a real person whose device had been infected by infostealer malware. Every record included an email address, a plaintext password, and one or more URLs showing which websites and services that person was using. The name of the file, advertising the logs as "free," signals that this data was deliberately shared with as many criminals as possible, not sold privately but handed out openly.

Why the MOONLOGSFREE Data Gives Attackers Direct Account Access

Imagine someone already holding your exact email address and your exact password. They do not need to guess, crack, or phish. They simply type your credentials into a login page and walk in. The URLs in this file make it even worse: attackers can see which specific websites each victim visited, so they know exactly which accounts to target first. They will prioritize banking sites, email providers, and workplace tools. With one working login, they can reset passwords on other accounts, read private messages, and lock victims out entirely. This is the real consequence of a stealer log breach.

What Was Exposed in the MOONLOGSFREE 500pcs File

• Email addresses (serving as usernames across most platforms)
• Plaintext passwords (fully readable, immediately usable)
• Website and API host URLs (pinpointing exactly which services were accessed)

Why the MOONLOGSFREE Breach Creates Lasting Risk

Once a stealer log file is shared openly on Telegram, it spreads. Copies get saved, re-uploaded, and sold. The data does not expire. Credentials stolen in 2023 will still work in 2025 and beyond if the passwords were never changed. For the 12,944 people in this file, every account where they reused that same password remains at risk. Credential stuffing attacks, account takeover, identity theft, and financial fraud are all real outcomes. Victims rarely find out until something goes wrong on an account they care about.

How Infostealer Malware Collects Credentials Like These

Infostealer malware is software designed specifically to steal login information from an infected computer. It typically arrives through a phishing email, a fake software download, or a malicious browser extension. Once installed, it runs quietly in the background, reading saved passwords from the browser, capturing keystrokes, and recording which sites the user visits. All of that information is compiled into a log file and sent to the attacker. The attacker then sells the logs, shares them, or uses them directly. The person whose computer was infected may never recieve any warning that this happened.

Check If Your Data Appears in the MOONLOGSFREE Dump

HEROIC offers a free breach scanner backed by a database of over 400 billion compromised records, including stealer log collections like MOONLOGSFREE. Enter your email address to see whether your information is in the database. If a match appears, change your password on every site where you used the same credentials and turn on two-factor authentication immediatly. The sooner you act, the better your chances of staying ahead of anyone who already has your data.