Breach Intelligence Report 29 Sep 2026

What Attackers Can Do With the WATERCLOUD_NOTIFY 457 Leak

HEROIC
HEROIC Threat Intelligence Team
Email Addresses Plaintext Password Urls
Stealer Logs WATERCLOUD_NOTIFY-09.08.2024-457 FILES-THANKS FOR SUB uploaded by a Telegram User
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Records Exposed 5,455
Source Type Stealer log
Origin United States
Password Type plaintext

HEROIC analysts catalogued 5,455 email addresses, each paired with a plaintext password and the exact URL it unlocks, inside a stealer log labeled WATERCLOUD_NOTIFY-09.08.2024-457 FILES-THANKS FOR SUB, uploaded to Telegram on August 9, 2024. Each pairing hands an attacker a ready-made login rather than a password with nowhere to use it. The only way to know if your own pairing is among them is to scan your email for free.


What an Attacker Can Do With a Complete Pairing Like This

With an email, its password, and the exact site it opens all sitting together, an attacker does not need to guess anything. They can attempt to log in immediately, and if that login succeeds, move on to resetting other account details before the real owner notices anything unusual.


What This File Contains

  • Email Addresses: point to a working inbox.
  • Plaintext Password: readable immediately, with nothing to crack.
  • URLs: identify the exact site or service each login opens.

Why a Reused Password Multiplies What Attackers Can Do

If the password in one of these 5,455 pairings has been reused anywhere else, an attacker can take the exact same credential and try it against other services. Each successful match becomes another account attackers can act on, well beyond the one listed in this file.


How a 457-File Batch Like This Gets Assembled

Stealer malware on infected devices quietly records saved browser logins as they are entered, and the operator behind this release compiled 457 individual files into one dated batch before sharing it on Telegram, thanking subscribers to the channel as part of the release.


Could Attackers Already Use Your WATERCLOUD_NOTIFY 457 Pairing?

Use the link below to scan your email and check directly. If your address appears, change that password everywhere you have reused it, starting with your email account, and set a unique password for every other service, treating a work email with the same urgency as a personal one.

Breach Breakdown

Domain WATERCLOUD_NOTIFY-09.08.2024-457 FILES-THANKS FOR SUB uploaded by a Telegram User
Leaked Data Email Addresses,Plaintext Password,URLs
Password Types plaintext
Date Leaked 29 Sep 2026
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Private & Secure No Account Needed 2,920 scanned today
Breach Rank #N/A by affected users
Impact Score
0
sensitivity + scale + recency
Est. Financial Impact $39.5K 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

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

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