The Datacloudspace Stealer Log Leaked in 2023. It’s Still Circulating.

In May 2023, a Telegram user uploaded a stealer log file linked to Datacloudspace that exposed 12,159 records containing email addresses, plaintext passwords, and URLs. Stealer logs are collected silently by malware installed on victims' devices, meaning most affected users never recieve any notification that their credentials were captured. Three years later, this data continues to circulate across dark web forums and Telegram channels, where threat actors actively use it for credential stuffing and account takeover attacks.

Why This Is Dangerous

Stealer log breaches are among the most damaging types of data exposures because the credentials captured are taken directly from active browser sessions and saved password managers. Unlike database leaks where passwords may be hashed, stealer logs almost always contain plaintext passwords -- exactly what an attacker needs to log in immediately. The fact that this log has been circulating since 2023 means it has already been processed by automated tools and cross-referenced against dozens of other breaches. Every month it remains in circulation, the risk of account compromise grows for anyone whose data was included.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (endpoint and API host references)

Why This Matters

Plaintext password leaks are particularly severe because they eliminate any protection that password hashing would normally provide. When your password is exposed in plain text, attackers can attempt to use it immediately across hundreds of other services -- a technique known as credential stuffing. If you reuse the same password across multiple sites, a single stealer log exposure can cascade into a full account takeover across your email, banking, and social media profiles. The occured breach also exposed API host URLs, which could reveal internal infrastructure details to malicious actors.

How Stealer Logs Work

Stealer logs are created when malware -- typically distributed through phishing emails, pirated software, or malicious browser extensions -- is installed on a victim's device. Once active, the malware silently harvests credentials from saved passwords in browsers, autofill data, and active session tokens. The collected data is bundled into a log file and uploaded to a command-and-control server or shared directly via Telegram channels. Threat actors then sort and sell these logs based on the value of the adresses and credentials they contain. Victims rarely know they have been infected until their accounts are compromised.

Check If You Are Affected

HEROIC's free scanner searches over 400 billion records -- including this Datacloudspace stealer log -- to tell you instantly whether your email address or passwords have been exposed. If your credentials appear in this breach, you should change your passwords immediately, enable two-factor authentication on all accounts, and run a full malware scan on any devices that may have been infected. Do not wait -- stealer log data is actively weaponized the moment it is shared online.