HEROIC Analysts Found SunCloudNew’s 277K Passwords Leaking

HEROIC analysts found a file labeled "SunCloudNew 1778 - 464 K ULP" circulating on Telegram on July 15, 2026. After pulling and verifying the file, analysts confirmed it contained 277,373 records, each combining an email address, a plaintext password, and the URL that login was tied to. This is the second SunCloudNew-tagged batch analysts have logged in as many days, suggesting the same uploader is working through a larger set of stolen credentials in pieces.

Why This SunCloudNew Batch Is Dangerous

Because each of the 277,373 records already pairs a working URL with its matching email and plaintext password, an attacker does not need to do any additional work to use the data. The file can be loaded directly into automated login tools that attempt each credential against its listed site in bulk. If you used that same email and password combination anywhere else, an attacker who obtains this file could attempt to log into those accounts too, without ever needing to crack or guess a thing.

What Was Exposed in This Batch

• Email addresses
• Plaintext passwords
• URLs identifying where each login was used

Why This Matters Beyond the Original Sites

A leak of 277,373 credentials is significant on its own, but the bigger risk is password reuse. Criminals use files like this one to run credential stuffing attacks, automatically testing the same email and password against banking sites, email providers, and online stores far removed from where the credentials were originally exposed. That is how a single leaked combolist turns into account takeover, financial fraud, or identity theft for people who never used the original site at all.

How Analysts Track Combolists Like This One

Combolists such as this SunCloudNew batch are built by compiling stolen username, password, and URL combinations from smaller breaches, phishing kits, and malware logs into a single file, then uploading it to Telegram channels where other users can download or trade it. HEROIC analysts monitor these channels specifically to catch new uploads like this one shortly after they appear, so the exposure can be added to HEROIC's database and flagged for anyone affected.

Check If Your Email Is in This Leak

If you want to know whether your email address is among the 277,373 records in this SunCloudNew batch, or any other breach HEROIC has tracked, run a free scan. HEROIC's breach scanner checks your email against a database of more than 400 billion compromised records and tells you in seconds if you were affected. If you find a match, change that password immediately, and anywhere else you reused it.