Breach Intelligence Report 02 Jun 2026

121,289 Records Leaked in the KURZL0GS_UP Telegram Dump

HEROIC
HEROIC Threat Intelligence Team
Email Addresses Plaintext Password Urls
Stealer Logs BUP 4.6K PCS KURZL0GS_UP Part 1 uploaded by a Telegram User
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Records Exposed 121,289
Source Type Stealer log
Origin United States
Password Type plaintext

121,289. That's how many stolen login records showed up in a single Telegram post labeled BUP 4.6K PCS KURZL0GS_UP Part 1 on June 1, 2026, making it one of the larger stealer log dumps to surface this year.


Why This Is Dangerous

A number that size is hard to picture, so think of it this way: 121,289 separate email and password combinations, each one capable of unlocking a real person's account, all sitting in plaintext in a single downloadable file. There's no cracking involved, no waiting, just copy, paste, and try.


What Was Exposed

  • Over a hundred thousand email addresses
  • Passwords recorded with no hashing or masking
  • URLs linking each credential to its original site

Why This Matters

The "Part 1" in the file name is the part that should concern people most, it implies there's more coming, wich means this particular collector or malware operation processed enough infected machines to justify splitting the data across multiple releases. This isn't a one-time occassion, it's an ongoing pipeline.


How Stealer Logs Work

Reaching a count above 100,000 records usually means the operator combined output from several infection campaigns rather than a single malware run. Tools like Lumma or RisePro get distributed broadly through cracked software and fake installers, and every infected device quietly contributes its saved browser passwords to a shared pool that eventually gets compiled and posted like this one.


Check If You Are Affected

With over 121,000 records in just this one file, the odds that someone you know is affected are pretty high, and checking won't take you more than a minute. HEROIC's free scanner searches over 400 billion leaked records total, and it will tell you imediately if your email shows up in this dump or any other.

Breach Breakdown

Domain BUP 4.6K PCS KURZL0GS_UP Part 1 uploaded by a Telegram User
Leaked Data Email Addresses,Plaintext Password,URLs
Password Types plaintext
Date Leaked 02 Jun 2026
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Private & Secure No Account Needed 3,227 scanned today
Breach Rank #3,954 by affected users
Impact Score
5
sensitivity + scale + recency
Est. Financial Impact $877.6K fraud, phishing & misuse risk
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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

High Priority
Password Security

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

Important
Financial Protection

Monitor credit reports and set up fraud alerts with major credit bureaus

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Identity Protection

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