The Good_Plesk Breach Gave Hackers Everything They Need to Drain Accounts

In October 2025, HEROIC analysts identified a stealer log file uploaded to Telegram under the name "Good_Plesk." The file contained 55 records tied to Plesk web hosting control panel accounts, each including an email address, a plaintext password, and the URL of the affected Plesk instance. While the record count is small, the nature of the credentials makes this leak particulaly serious: Plesk credentials grant administrative access to web servers, email systems, and databases hosted on those servers.

Why the Good_Plesk Breach Gave Hackers Everything They Need to Take Over Servers

Plesk is a web hosting control panel used by website owners, developers, and small businesses to manage their servers, domains, email accounts, and databases. When an attacker obtains a working Plesk login, they do not just gain access to one account. They gain administrative control over everything hosted on that server. That includes every website, every database, every email inbox, and every file stored on the machine.

With 55 verified Plesk credentials in this file, each tied to a specific server URL, an attacker has a ready-made list of hosting environments to compromise. They can install malware on those websites, redirect traffic, steal customer data, or hold the entire server for ransom without the owner even realizing anything is wrong until the damage is already done.

What the Good_Plesk Stealer Log Exposed

• Email addresses used to log into Plesk hosting control panels
• Plaintext passwords for those Plesk accounts
• URLs identifying the specific Plesk servers that were targeted

Why Hosting Control Panel Credentials Are High-Value Targets for Attackers

Most credential leaks affect individual user accounts. Hosting control panel credentials are different. A single compromised Plesk login can expose every client site on a shared hosting environment, every database those sites rely on, and every email account hosted on the same server. Businesses that manage client websites face particularely high risk: one stolen Plesk password could expose dozens of their clients' data without any of those clients being directly infected.

Attackers who gain Plesk access can also create new admin accounts, locking out the legitimate owner, and use the server's resources to send spam, host phishing pages, or participate in botnet activity. The financial and reputational damage from a single hosting takeover can be severe and long-lasting.

How the Good_Plesk Stealer Log Was Assembled and Shared

Like other stealer log files, Good_Plesk was produced by infostealer malware running on the device of someone with saved Plesk credentials. The malware scanned the browser's credential store and identified saved logins for Plesk URLs, then captured the email, password, and URL for each one. These records were bundled into a file and uploaded to Telegram, where they became accessable to any member of those private cybercrime channels.

The "Good" prefix in the file name is a common convention in these communities, signaling that the credentials have been recieved as working rather than dead or expired. This increases the immediate utility of the file for anyone who downloads it.

Check If Your Plesk Account or Hosted Sites Are at Risk

HEROIC's breach scanner has indexed the Good_Plesk file as part of its database of more than 400 billion records. If your email address or Plesk login appears in this dump, the scanner will identify it immediately.

Search your email address at HEROIC for free. If you are affected, log into your Plesk control panel immediately, change the password, review any recently created admin accounts, and check your hosted files for unauthorized changes. Enabling two-factor authentication on your Plesk instance will help prevent future unauthorized access.