Developer Compares Building the Same Security App on macOS and Linux

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A developer built the same background security application on both macOS and Linux, documenting the contrasting experiences. On macOS, they found a tightly controlled environment where Apple's code signing, notarization, and entitlements system restricts what apps can do but builds user trust automatically. Linux offered far greater freedom — allowing low-level system access via tools like fanotify and nftables — but required manual configuration and placed full responsibility for security on the developer. The author concludes that the core difference lies not in available tools but in how each platform assigns responsibility for trust and safety. They note that macOS holds official UNIX 03 certification, while Linux, despite sharing Unix conventions, has never been formally certified.

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