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Add windows/hardening-spec.md: the detailed config-layer hardening spec for SilverMetal Enhanced - Windows, with the GPD Pocket 4 (AMD Strix Point) as reference device. Eight control domains (provisioning, boot/firmware trust, data-at-rest, kernel/credential isolation, app control, network/radios, physical/lock-screen, privacy/update) each with verification commands, a buyer-facing residual-risk statement, and one-off -> SKU productization notes. Refine the windows/README.md v1 scope to match, grounded in the 2026-06-08 deep-research assessment: - BitLocker TPM+PIN (never TPM-only) - PIN defeats the faulTPM-class offline fTPM attack that is literally a BitLocker VMK extraction - WDAC (App Control), kernel-enforced, audit-first then enforce, as primary; AppLocker demoted to fallback (rename planned applocker/ -> wdac/) - Telemetry at GP+service+firewall layers, NOT hosts-file blocking of MS domains (that breaks Windows Update; violates "update or die") - Add VBS/HVCI/Credential Guard/Kernel DMA Protection to scope + verify gates - Note Enterprise (prototype) vs IoT Enterprise LTSC (SKU target) equivalence Bound by docs/threat-model.md and docs/design-principles.md; nation-state / firmware tier explicitly NOT claimed on consumer UMPC silicon. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
SilverMetal
Privacy-hardened devices for users who want their privacy back — on whatever platform they have.
SilverMetal is SilverLABS' cross-platform privacy-hardening program. We don't believe in "one true OS" — we meet users on the platform they actually use, and give them the strongest hardening that platform physically allows. Honestly labelled, no marketing fluff.
Two product lines
The SilverMetal program ships two distinct product lines, named to make their scope obvious to buyers:
🔒 SilverMetal OS
We ship the operating system or ROM. Full kernel-level control, our verified-boot key, our update channel. Strongest possible hardening.
- SilverMetal OS — Linux (Debian/Kicksecure-based ISO) — Tier A
- SilverMetal OS — Pixel (GrapheneOS-fork ROM) — Tier B
- SilverMetal OS — Samsung (LineageOS-fork ROM, unlocked-bootloader models) — Tier C
- SilverMetal OS — Motorola (DivestOS/LineageOS-fork ROM) — Tier C
🛡️ SilverMetal Enhanced
We harden the OS your device already runs. Configuration profiles, hardening installers, the SilverLABS Application Stack. For users who can't or won't replace their OS.
- SilverMetal Enhanced — Windows (LTSC IoT installer + hardening + Stack) — Tier C
- SilverMetal Enhanced — macOS (signed config profile + setup script + Stack) — Tier C-D
- SilverMetal Enhanced — iOS (MDM profile + Stack) — Tier D
- SilverMetal Enhanced — Android (generic profile + Stack on existing Android) — Tier D
Tiers explained in docs/platform-matrix.md.
What every SilverMetal device gets
Both lines ship the SilverLABS Application Stack — a suite of cross-platform privacy apps that replace the cloud services your device normally talks to (Google, Apple, Microsoft):
| Component | Status | Purpose |
|---|---|---|
| SilverBrowser | v1 (Linux MVP) | De-Googled, telemetry-free, fingerprint-resistant browser |
| SilverVPN | Existing — see SilverLABS/SilverVPN |
Always-on, no-logs VPN with our own infrastructure |
| SilverSync | v1 (Linux MVP) | Private replacement for iCloud / Google Drive / OneDrive |
| SilverChat | Existing — SilverVPN.Client.Chat, Signal Protocol over VPN transport. Promoted from v1.1 to v1 |
E2EE messenger |
| SilverDuress | v1.1 | Duress password / panic-wipe / anti-coercion |
| SilverKeys | v1.1 | Zero-knowledge password + 2FA manager |
Two ways to get SilverMetal
Every flavour — OS or Enhanced — supports both buyer modes:
"I'm choosing a new device"
Buy a preflashed SilverMetal SKU. We've done all the work; it arrives ready.
"I already own a device and want to harden it"
Download the free SilverLABS Stack + the SilverMetal OS or Enhanced package for your platform. Apply it yourself. Same software, same hardening, no hardware lock-in.
Status
| Component | Status |
|---|---|
| Documentation + roadmap | Initial scaffold complete |
| SilverMetal OS — Linux v1 | Phase 1 — moving to milestone 1.1 (build pipeline) |
| SilverLABS Stack v1 (Browser + Sync) | Planning |
| SilverVPN | Existing product, integration into v1 ISO planned |
| SilverChat | Existing product (SilverVPN.Client.Chat); promoted to v1, integration into v1 ISO planned |
| Other OS/Enhanced flavours | Planning, post-Linux v1 |
See docs/roadmap.md for the milestone-driven plan.
Related repositories
| Repo | Relationship |
|---|---|
SilverLABS/SilverVPN |
The VPN component of the SilverLABS Stack — already in production. SilverMetal integrates it; does not re-implement it |
SilverLABS/SilverApple |
Deprecated. Earlier iOS-hardening prototype, superseded by SilverMetal Enhanced — iOS |
SilverLABS/SilverDROID |
Unrelated (SilverSHELL AppStore Android client). Name is similar but scope is different |
Documentation
docs/threat-model.md— who we defend against, who we don'tdocs/design-principles.md— privacy-by-default, verifiability, honestydocs/platform-matrix.md— full per-platform pros/consdocs/roadmap.md— milestones, ship order, scopedocs/trust-model.md— signing keys, reproducible builds, governance
License
Components carry their own licenses (most are GPL/MIT/Apache-derived from upstream forks). Original SilverLABS-authored glue code is AGPL-3.0-or-later. See LICENSE.
SilverLABS
SilverMetal is built by SilverLABS — privacy-first infrastructure and applications.