Developer Builds ATLOCK v4, a Portable Windows Security Toolkit With Local-First Design

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A developer has created ATLOCK, a portable Windows application that bundles multiple security features including system lockdown, NTFS/ACL file protection, a local password vault, and an intruder detection module. The project is currently in its fourth iteration, with the developer actively building and refining it as an independent effort. A core design principle behind ATLOCK is that user data should not leave the device unless strictly necessary, avoiding any dependency on cloud backends for basic functionality. Rather than building custom permission systems, the developer chose to leverage Windows' existing NTFS/ACL security model, citing good engineering as knowing what not to rebuild. The project is open source and available on GitHub, where the developer is inviting users to test, critique, and suggest improvements.

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