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Free Download LeakCheck Professional 1.002 Multilingual | 13.8 Mb
LeakCheck Professional is a Windows utility for checking passwords and email addresses against known data breaches. It is designed to help users identify compromised credentials and monitor stored accounts for newly reported breaches while keeping the stored sensitive information on the local computer.
The software uses the Have I Been Pwned database to check passwords and email addresses. Password verification uses a k-anonymity method in which an anonymized hash fragment is sent to the Have I Been Pwned API rather than transmitting the password in plain text.
The Professional Edition adds automatic background monitoring for stored passwords and email addresses. When a new matching data breach is detected, LeakCheck opens and provides a notification so that affected credentials can be reviewed.
Software Overview
LeakCheck Professional provides a centralized interface for checking the security status of passwords and email accounts against known data breaches. Passwords can be tested using the integrated password checker, while email addresses can be added to a monitoring list and checked against the Have I Been Pwned database.For affected email addresses, the software displays information about the associated breaches, including their names, titles, and dates. A dashboard separates safe and compromised entries and provides an overview of the detected breach count.
Stored passwords and email addresses remain on the local PC. LeakCheck uses the Windows Data Protection API (DPAPI) to encrypt locally stored data with a key associated with the Windows user account.
Key Features
- Check passwords against known data breaches using the Have I Been Pwned database.
- Use k-anonymity to avoid sending passwords in plain text during password checks.
- Check email addresses against known data breaches.
- Monitor multiple email addresses from a centralized list.
- Display breach names, titles, and dates for affected email addresses.
- Automatically monitor passwords and email addresses in the Professional Edition.
- Notify users when newly detected data breaches affect monitored entries.
- View password and account security information through a centralized dashboard.
- Separate safe and compromised entries for easier review.
- Store passwords and email addresses locally on the PC.
- Protect locally stored data using Windows Data Protection API (DPAPI).
Why Choose LeakCheck Professional
LeakCheck Professional is intended for users who want to check stored credentials against known data breaches and continue monitoring them for newly reported incidents. Its password and email checking functions provide separate ways to identify potentially compromised information.The Professional Edition's background monitoring extends the manual checking workflow by automatically reviewing stored entries and notifying the user when a new matching breach is detected. Local storage and DPAPI protection are used to safeguard the information maintained by the application.
What's New
Product changes and version history are documented on the official product history page.https://www.ascompsoftware.com/en/products/leakcheck/tab/history
System Requirements
- Windows 11
- Windows 10
- Windows 8.1
- Windows 8
- Windows 7
- Windows Server 2022/2025
- Windows Server 2016/2019
- Windows Server 2012
- Windows Server 2008
Frequently Asked Questions
What can LeakCheck Professional check?
The software can check passwords and email addresses against known data breaches using the Have I Been Pwned database.Are passwords sent to the Have I Been Pwned service in plain text?
No. LeakCheck uses a k-anonymity checking method in which an anonymized hash fragment is sent to the Have I Been Pwned API rather than the password itself.Can LeakCheck monitor email addresses automatically?
Yes. The Professional Edition can automatically monitor stored email addresses and notify the user when a new matching data breach is detected.Where is LeakCheck data stored?
The source states that passwords and email addresses are stored exclusively on the local PC and protected using the Windows Data Protection API (DPAPI).Is LeakCheck available for private use?
The source states that LeakCheck is free for private use, while the Professional Edition provides automatic background monitoring.Home Page
https://www.ascomp.de
Product Information
- Software Name: LeakCheck Professional
- Version: 1.002
- Languages: Multilingual
- License type: Full Version
- File Size: 13.8 Mb
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