The Lunar Cloud Logs Breach Gave Hackers Everything They Need to Drain Your Accounts

In June 2025, HEROIC's DarkHive threat intelligence team identified a stealer log file uploaded to Telegram by a user associated with "Lunar Cloud Logs" under the label "LunarLogsFree." The dump contained 39,435 records, each exposing an email address, a plaintext password, and the URL of the website where those credentials were used. The "Free" designation in the file name indicates this dataset was distributed at no cost, meaning it has likely been downloaded and used by a wide range of threat actors.

The plaintext format of the passwords is what makes this breach especially concerning. There is no encryption or hashing to slow attackers down. Every credential in the file is ready to use the moment someone opens it. Combined with the matching URLs, this data gives criminals a precise map of which accounts to target and exacly how to get in.

What the Lunar Cloud Logs Dump Exposed

• Email Addresses: Nearly 40,000 unique email accounts connected to real online services and platforms
• Plaintext Passwords: Unencrypted, fully readable passwords captured directly from victims' browsers
• URLs: The specific login pages and websites tied to each credential pair

What Attackers Can Do With 39,435 Stolen Credential Pairs

When criminals have your email, your password, and the website it belongs to, the attack path is straightforward. They log in. If the password still works, they own the account. From there, the damage depends on what kind of account it is. A compromised email account lets them reset passwords on every other service you use. A breached banking login leads directly to financial theft. A stolen social media account can be used to scam your contacts or spread malware.

But the damage does not stop at the accounts listed in the dump. Attackers run credential stuffing operations where they test each email and password combination against hundeds of other popular websites automatically. If you reuse passwords across services, a single entry in the Lunar Cloud Logs file could unlock your entire online presense, from cloud storage and streaming services to healthcare portals and workplace tools.

How Stealer Log Malware Works Behind the Scenes

Stealer logs are produced by infostealer malware, a type of malicious software that runs silently on infected computers and phones. Victims usually install it without realizing, often through pirated software, fake browser updates, phishing emails, or trojanized downloads from untrusted sources. Once active, the malware monitors browser activity and extracts saved passwords, autofill data, cookies, and session tokens.

All of this stolen information gets packaged into organized log files and sent to the attacker's infrastructure. The logs are then distributed through Telegram channels, dark web forums, and private marketplaces. Free releases like the Lunar Cloud Logs dump tend to spread the fastest because there is no paywall, which means more attackers get access to the data and more victims face potential compromise.

Check If Your Credentials Were in the Lunar Cloud Logs Release

HEROIC maintains one of the world's largest breach intelligence databases, with over 400 billion records indexed from thousands of breaches and stealer log dumps. Our free breach scanner lets you check your email address against the entire database, including the Lunar Cloud Logs dataset. It takes just a few seconds and shows you exactly which breaches contain your information, so you can change compromised passwords and lock down your accounts before attackers get there first.