Breach Intelligence Report 28 Sep 2025

8,359 United States Accounts Exposed in the PremCloud 481 Data Breach

HEROIC
HEROIC Threat Intelligence Team
Email Addresses Plaintext Password Urls
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Records Exposed 8,359
Source Type Stealer log
Origin Telegram
Password Type plaintext

PremCloud 481: Premium Branding, Real Credential Risk

The name "PremCloud" -- shorthand for premimum cloud -- is a marketing choice. Underground stealer log operators frequently name channels to signal quality, exclusivity, or reliability to potential buyers. PremCloud 481, released October 18, 2023, contained 8,359 plaintext US credentials across 481 individual log files, at a per-file density of approximately 17.4 records. The "481" file count, encoded directly in the batch name, allows buyers to immediately analize the scope before committing to a download. At 17.4 rec/file, PremCloud sits in the mid-range for Oct 18 density -- above the low-sweep operators at ~12-14 rec/file, below the high-density runs above 25 rec/file.


PremCloud 481 (October 2023): Stealer Log Summary

  • Records Exposed: 8,359
  • Data Types: Email addresses, plaintext passwords, URLs
  • Breach Type: Stealer log -- credentials harvested from malware-infected endpoints, not a direct database breach
  • Password Type: Plaintext -- captured directly from browser sessions and credential stores by infostealer malware
  • Country: United States
  • Date Leaked: October 18, 2023

PremCloud in the Oct 18 Operator Field

PremCloud 481's 8,359 records places it in the mid-tier of the Oct 18 dataset by volume. It occured alongside dozens of other operator releases that day -- a coordinated distribution event that produced over 150,000 combined US stealer log credentials in a single 24-hour window. Other mid-tier operators on October 18 included Suncloud 500 (7,244 records), BananaLogs (18,391 combined), and DAMN_ISRAEL OTTOHELP batches ranging from a few hundred to several thousand records each. PremCloud's 8,359-record count happens to exactly match STAKE_LOGS, another Oct 18 operator -- whether by coincidence or shared infrastructure remains unclear.


The "Cloud" Branding Pattern

Multiple operators in the Oct 18 dataset use "cloud" in their channel identities: PremCloud, Suncloud, Usmancloud, SunCloudPubl, Monster Cloud. The cloud branding signals to buyers that logs are stored, organized, and distributed via cloud infrastructure -- reliably accessible rather than ephemeral. It's a trust signal in a market where reliability matters. Operators who build reputations for consistent delivery attract recurring buyers. PremCloud's "premium" prefix layers an additional quality claim on top of that cloud credibility.


Plaintext Passwords: No Delay Required

PremCloud 481 credentials are plaintext -- captured by infostealer malware directly from browser credential stores, session tokens, and autofill data on infected machines. The 8,359 individuals in this dataset had their passwords extracted without hashing or encryption. An attacker with this data needs only an internet connection and a list of target services to begin credential stuffing. The typical exposure window for stealer logs -- from harvest to public release to active abuse -- can span anywhere from days to months, but once data is public, that window closes for containment and never reopens.


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HEROIC's free breach scanner indexes more than 400 billion exposed records including PremCloud 481 and other Oct 18 stealer log releases. Enter your email to see if your credentials were exposed at HEROIC's breach scanner.

Breach Breakdown

Domain N/A
Leaked Data Email Addresses,Plaintext Password,URLs
Password Types plaintext
Date Leaked 28 Sep 2025
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Identity Theft Risk Score

Risk Score: 8.7/10 - Critical

Data Exposure Analysis

Passwords Critical
Financial High
Personal Medium
Social High
Security Critical

Breach Timeline Analysis

March 2024 Multiple credentials exposed in recent data breach
January 2024 Password found in dark web marketplace
December 2023 Personal information leaked in major security incident

Security Recommendations

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Critical: Change compromised passwords immediately and enable 2FA on all accounts

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