Major Privacy is an advanced privacy tool for Windows. It is a continuation of the PrivateWin10 project. It brings a multitude of new functionality made possible through the use of a custom kernel isolation driver.
Conceptually, Major Privacy is a HIPS (Host Intrusion Prevention System). The driver can monitor and filter file/registry access as well as protect processes from being manipulated by other processes. It leverages the Windows built-in mechanisms to restrict network traffic, and brings a convenient collection of privacy-enhancing tweaks. It implements its own rule-based software restriction mechanism, i.e. the ability to prevent unauthorized or undesired applications from running.
Using the process protection feature of the KernelIsolator driver, Major Privacy can protect unprivileged user processes from being compromised and their secrets exfiltrated, even from threads running with system or administrative privileges. Its ability to protect processes, in combination with its ability to restrict access to files and folders, helps to protect personal data.
Furthermore, Major Privacy is capable of creating protected volumes located in encrypted container files, such that access to confidential data is only possible when the user provides the correct password and the tool is actively filtering filesystem accesses. The privacy agent logs file, registry, and network access, and provides comprehensive logs and visualizations of process activity on the host system. This enables the user to check if their applications are only doing what they want them to do.
Major Privacy is designed to not only provide a line of defense against regular malware, but also to defend the user from legitimate - but overreaching - software, so that the software can be safely used and the companies behind it won"t be able to access anything the user did not choose to make available.
MajorPrivacy – Ultimate Privacy & Security for Windows key features
- Process Protection – Isolate processes to block interference from unauthorized apps, even with admin privileges.
- Software Restriction – Block unwanted apps and DLLs to ensure only trusted software runs.
Revolutionary Encrypted Volumes
- Secure Storage – Create encrypted disk images for sensitive data.
- Exclusive Access – Unlike traditional tools, only authorized apps can access mounted volumes—blocking all unauthorized processes.
- File & Folder Protection – Lock down sensitive files and prevent unauthorized access or modifications.
- Advanced Network Firewall – Control which apps can send or receive data online.
- DNS Monitoring & Filtering – Track domain access and block unwanted sites (Pi-hole compatible filtering coming soon).
- Tweak Engine – Disable telemetry, cloud integration, and invasive Windows features for better privacy.
Why MajorPrivacy?
- Kernel-Level Security – Protects at the deepest system level.
- Unmatched Encryption Protection – Keeps mounted volumes safe from all unauthorized access.
- Full System Control – Block, isolate, or restrict processes as needed.
- Enhanced Privacy – Stops Windows & apps from collecting unnecessary data.
- Perfect for privacy-conscious users, IT pros, and anyone who wants total system control.
Major Privacy 0.99.9 Beta release notes:
- Major Privacy version 0.99.9 introduces a range of reliability and usability improvements, with a particular focus on rule handling, configuration robustness, and protected process operation.
- This release adds a new user column to the access log, making it easier to identify which account initiated a given operation and improving visibility when analyzing system activity across multiple users or services.
- Several important issues have been resolved in this build. The driver/UI interaction has been improved to fix a problem where the UI process was sometimes not recognized as a protected process by the driver, which could lead to inconsistent behavior in certain situations.
- An issue causing user names in rules to not be properly saved and applied has also been fixed, ensuring user-specific policies now persist and function correctly.
- Additional work has been done to improve configuration recovery after failed boots, reducing the risk of corrupted or partially restored settings after abnormal shutdown scenarios.
- Furthermore, issues related to installed application path changes have been addressed, improving rule consistency and reducing maintenance when software is updated or relocated.
- This release also updates the bundled ImDisk driver to the latest 3.0.1 version and includes further refinements to the volume view for a cleaner and more polished user experience.
Download: Major Privacy 0.99.9 Beta | 41.2 MB (Open Source)
View: MajorPrivacy Home Page | Github Project page | Screenshots 1 | 2
