Login
Data Breach Scan

CheckmarkTest

06 Oct 2025 N/A 06-Oct-2025 Database,Combolist
10,586 Records Affected
Database,Combolist Source Structure
Unknown Source Breach Location
High-risk data exposed (passwords and/or SSN). Immediate credential reset and monitoring are recommended.
 
All information submitted is Private and Secure. We do not sell or share email addresses. By searching, you agree to HEROIC's Privacy Policy and Terms of Service.

Breach Details

Domain N/A
Leaked Data Types Email Address,Password Hash,Salt
Password Types MD5(Salt)

Description

In August 2018, CheckmarkTest, a now defunct platform, suffered a data breach exposing nearly 11,000 unique records. The compromised information included email addresses and MD5 hashed and salted passwords. The dataset was later shared on a prominent hacking forum.

Leaked Data Types

Email · Address · Password · Hash · Salt

Breach Rank

Ranked by number of affected users

Impact Score

Impact Score: 0.42

Based on data sensitivity, breach size, and recency

Estimated Financial Impact

$76.6K

This is an estimate based on potential fraud, phishing, and data misuse. Not all users will be affected.

Related Breaches

337 PCS – 11.12.23 – OCTOPUSCLOUDLOGS uploaded by a Telegram User

12-Nov-2023 N/A
Records 5,908

CESVI Mexico

28-Jul-2017 N/A
Records 11,283

PiratesLogs 144pcs uploaded by a Telegram User

13-Nov-2023 N/A
Records 1,613

Check Your Data Security

See if your personal information has been exposed in data breaches

All information submitted is Private and Secure. We do not sell or share email addresses. By searching, you agree to HEROIC's Privacy Policy and Terms of Service.
100% Private Search
Enterprise Security
No Payment Required

Your search is private and secure. We never store or share your search data.

Scan to sign up

Scan to sign up instantly

24/7 Dark Web Monitoring
Instant Breach Alerts
Secure Data Protection
Your Data is at Risk

Your Personal Information is Exposed

We found your data exposed in multiple breaches. This includes:

  • Email addresses
  • Passwords
  • Phone numbers
  • Financial information
Secure My Information Now

Your information is protected by enterprise-grade security

Secure My Information Now

Your Breach Details

Date:
Severity:
Records Exposed:

Your Exposed Information

Your Risk Level

How This Affects You

Full Breach Details

Premium Insights

Unlock Critical Security Information

Create a free account to access:

  • Full Breach Impact Analysis
  • Identity Theft Risk Score
  • Exposed Credentials Details
  • Personalized Security Recommendations
Create Free Account

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

Enable advanced identity monitoring and dark web surveillance

Your information is still at risk. Take action now to protect yourself.
Secure My Information Now