Breach Intelligence Report 22 May 2026

ArtHouse Cloud v4 Stealer Log Exposed 3,420 Credentials

HEROIC
HEROIC Threat Intelligence Team
Email Addresses Plaintext Password Urls
Stealer Logs ArtHouse Cloud Logs v4 uploaded by a Telegram User
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Records Exposed 3,420
Source Type Stealer log
Origin United States
Password Type plaintext

ArtHouse Cloud Logs v4 leaked on 10-May-2026. It contains 3,420 stolen login records. That's the whole story in one sentence, but the details underneath still matter.

Why This Is Dangerous

Plaintext passwords do not protect anyone. No encryption stood between this data and whoever downloaded the file. Anyone with access can read every password immediately, exactly as it was typed by the original account holder.

What Was Exposed

  • Email addresses, unmasked
  • Passwords, stored in plaintext
  • URLs, tying each login to a specific site

Why This Matters

This is the fourth version from this same source. That pattern means the source is active. Active sources keep producing new victims. New victims mean more exposed accounts, wich compounds the risk over time rather than resolving it.

How Stealer Logs Work

Infostealer malware infects a device. It copies saved browser passwords. It sends them to a remote server. The data gets packaged as a log and posted for sale or free distribution, exactly as happened here four separate times already.

Check If You Are Affected

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Breach Breakdown

Domain ArtHouse Cloud Logs v4 uploaded by a Telegram User
Leaked Data Email Addresses,Plaintext Password,URLs
Password Types plaintext
Date Leaked 22 May 2026
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Breach Rank #N/A by affected users
Impact Score
0
sensitivity + scale + recency
Est. Financial Impact $24.7K fraud, phishing & misuse risk
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  • Financial information
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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

Recommended
Identity Protection

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