SunCloudNew Breach Put 3.2 Million Stolen Credentials Online Last Week

In May 2026, HEROIC analysts identified a massive stealer log file uploaded to Telegram under the name SunCloudNew 1190. The file contained 3,255,975 records, each pairing an email address with a plaintext password and the URL the credential was associated with. With nearly 4.96 million records in the original file and over 3.2 million indexed by HEROIC, this is one of the largest single stealer log uploads observed in recent months. The data was comprimised by infostealer malware deployed across a wide range of infected devices and distributed through underground channels.

Why a 3.2 Million Record Stealer Log Is a Massive Threat to Account Security

The sheer size of this file is significant. At over 3 million records, the SunCloudNew 1190 file gives attackers a pool of credentials large enough to run highly effective automated account takeover campaigns. Credential stuffing tools can process files of this size and test logins against thousands of websites simultaneously, generating successful account compromises at scale.

Unlike database breaches where passwords are hashed, every password in this file is already in plaintext. Combined with the specific URL for each credential, attackers can target the right services immediately. This requires no preparation, no cracking, and no guesswork on their part.

What the SunCloudNew 1190 Stealer Log Exposed

• Email addresses (over 3.2 million, covering a broad range of providers and domains)
• Plaintext passwords (immediately usable with no decryption required)
• URLs (the specific websites each stolen credential was harvested from)

Why This Leak Creates Serious Risk of Financial Fraud and Identity Theft

With over 3 million email and password pairs in one file, the probability that this data overlaps with banking portals, healthcare systems, and professional accounts is high. Attackers who obtained this file can target financial services, email providers, and cloud platforms with a high volume of valid credentials.

Many of the 3.2 million people whose data appears in this file likely recieved no notification that their credentials were stolen. Infostealer malware operates invisibly, and the gap between infection and discovery is typically measured in months. By the time HEROIC indexed this file, some of these accounts may already have been accessed or sold to third parties for further exploitation.

How the SunCloudNew ULP Stealer Log Was Built and Distributed

The SunCloudNew name follows a pattern common in Telegram-based credential operations. The ULP file format, standing for URL-Login-Password, is the standard output of infostealer malware. Programs like Redline, Vidar, and LummaC2 collect browser-saved passwords and form data from infected computers, then transmit everything back to the attacker.

The 1190 label in the file name likely refers to a batch number within a larger ongoing operation. Files from these operations are bundled and uploaded to Telegram channels where thousands of subscribers can download them freely. A file this large represents months of infected devices across a wide geographic footprint, with US-based accounts appearing to form a seperate and substantial portion of the dataset.

Check If Your Email Is Among the 3.2 Million Exposed in SunCloudNew

HEROIC has indexed the SunCloudNew 1190 stealer log as part of its breach intelligence database, which now covers more than 400 billion records. A free scan using your email address will tell you whether your credentials appeared in this file or any other known breach. Given the scale of this upload, anyone who suspects they may have been affected should check immediately and change any passwords that could be at risk.