Trust centre

Trust should be documented.

Local architecture, cryptographic proofs, and stated limits in one reviewable place.

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Protections are described with their real primitives, dependencies, and limits.

The PC is the local authority. The website is never a control plane for the product.

The model targets unauthorized local access, loss of a factor, and a compromised trust relationship.

Closing ScreenShield21 requires authentication, and no commercial state should trap a legitimate user.

Production Account data and the product’s local protection data remain in distinct scopes.

Vulnerability reports: security@screenshield21.com. The channel is operational; no guaranteed response time, SLA, or bounty program is announced.