Breach Intelligence Report 23 Mar 2026

Researchers Spot Files_17.10_18.21_95: 3.75M Records Leaked

HEROIC
HEROIC Threat Intelligence Team
Email Addresses Plaintext Password Urls
Stealer Logs Files_17.10_18.21_95 uploaded by a Telegram User
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Records Exposed 3,751,291
Source Type Combolist
Origin United States
Password Type plaintext

Analysts monitoring dark web Telegram channels flagged another entry in an ongoing file series on October 10, 2024. This one, numbered 95, held 3,751,291 lines of leaked email and password data, sitting quietly among a cluster of nearly identical uploads from the same source that appeared around the same date.


Why This Is Dangerous

From an outside perspective, what stands out is how routine this kind of upload has become. Whoever tracks these channels for a living sees files like this appear on a near-constant basis, each one carrying plaintext passwords that require no cracking, no cipher, and no technical effort to put to use the moment they're downloaded.


What Was Exposed

  • Email addresses harvested from a large pool of users
  • Passwords recorded in plaintext, fully readable to anyone
  • URLs specifying which platform each credential unlocks

Observers who track these leaks note that the presence of matching URLs is what separates a mildly useful list from a genuinely dangerous one, since it hands over the target along with the key.


Why This Matters

People outside the security world often don't hear about files like this until much later, if ever, which means by the time public awareness catches up, the credentials have usually already been tested against dozens of sites. Watching this happen repeatedly is what makes analysts push so hard for people to check their exposure proactively rather then waiting for a headline.


How This Type of Combolist Gets Compiled

From the outside, the pattern looks consistent, someone gathers stolen credentials from multiple smaller sources, formats them uniformly, and releases them in sequence under a shared naming convention. That consistency is exactly what lets researchers spot and track a series like the 17.10_18.21 files as new entries surface.


Check If You Are Affected

You don't need to be a researcher monitoring Telegram channels to find out if you're exposed. HEROIC's free scanner checks your email against a database of more than 400 billion leaked records and gives you a direct answer in seconds. Acting on that answer, by changing any matched password, is the part that actually protects you.

Breach Breakdown

Domain Files_17.10_18.21_95 uploaded by a Telegram User
Leaked Data Email Addresses,Plaintext Password,URLs
Password Types plaintext
Date Leaked 23 Mar 2026
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Breach Rank #N/A by affected users
Impact Score
40
sensitivity + scale + recency
Est. Financial Impact $27.1M 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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