The SunCloudPubl Breach Happened in 2023. The Credentials Are Still Live.

HEROIC analysts first flagged this stealer log in late October 2023, when an anonymous Telegram user quietly uploaed a file containing 8,849 records tied to SunCloudPubl. The data included email addresses, plaintext passwords, and internal API URLs -- the kind of combination that does not expire just because time has passed. Over a year later, those credentials remain a live threat to anyone who has not yet changed their password or audited their infrastructure access.

Why This Is Dangerous

Stealer logs are not one-time events. When a file like this circulates on Telegram, copies multiply fast. By the time most people hear about a leak, the data has already been re-shared dozens of times across different channels and forums. The plaintext passwords in this dataset mean attackers do not need to crack anything. They can try credentials directly against email logins, cloud dashboards, and VPN portals right now.

What Was Exposed

• Email addresses tied to SunCloudPubl endpoints
• Plaintext passwords -- no hashing, no encryption
• Internal URLs and API host addresses
• A total of 8,849 compromised records
• Leak date: October 22, 2023

Why This Matters

The presense of internal URLs alongside credentials is what separates this leak from a simple username and password dump. Attackers who hold both pieces of information can attempt to log directly into private infrastructure -- cloud storage buckets, admin panels, internal APIs -- without triggering the same alerts as a brute-force attack would. For organizations with any connection to SunCloudPubl endpoints, this is not a historical footnote. It is an ongoing exposure.

How Stealer Logs Work

A stealer log is created when malware infects a device and silently harvests everything stored or typed on it. Passwords saved in browsers, credentials auto-filled into forms, session cookies, and bookmarked URLs are all swept up. The malware then packages this data into a structured log file and sends it back to whoever is controlling the infection. These logs are then sold, traded, or in this case posted freely on Telegram channels where any member can download them. No hacking skill required. The hardest part is already done by the malware.

Check If You Are Affected

If you or anyone on your team has ever used credentials connected to SunCloudPubl services, there is a real chance your information is in this dataset. HEROIC's free breach scanner checks your email against more than 400 billion exposed records -- one of the largest breach databases available to the public. Run a check now to see if your accounts have been compromised, and change any passwords that appear in results immediately.