System-app DPC
Runs as Android Device Owner from first boot. Signed in the same release chain as the OS. Cannot be disabled, sideloaded over, or escaped by a rogue user-space app — policy enforcement happens below them, not alongside.
v0.1 · alpha · actively in development
A white-label MDM / UEM platform. Enroll, configure, lock down, and brand Android devices from any OEM — through one multi-tenant Partner API and an on-device Device Policy Controller. An optional hardened Custom OS tier is available for Pixel.
Verified
Boot
Memory
Tagging
Hardened
Kernel
Built-in
MDM
Surveillance
Ceiling
Custom
OS
The Device Policy Controller uses standard Android Enterprise (Device Owner) APIs, so it enrolls and manages Pixel, Samsung, and other OEM devices — no OS changes, no platform signing. For the highest assurance, the optional Custom OS tier adds verified boot keyed to you, on Pixel hardware.
The Device Policy Controller enforces the policy bag your IT defines, drives manifest sync, verifies branding-bundle signatures, and writes an audit-grade event stream you can pipe straight to your SIEM. One vendor, one signing chain.
The platform refuses to silently record audio, screen-capture, log keystrokes, or hide its management UI from the user. Seven forbidden keys are rejected server-side and re-checked on the device before any policy applies. Not optional. Not toggleable.
What HardenedOS protects you from
Every app on a regular Android home screen is a relationship: a deal you made (or didn't) about your data, your sensors, your mic, your network. Toggle a threat below to see which apps expose you to it. HardenedOS blocks all of these by default.
Device policy & MDM
Most mobile MDM is an admin agent installed onto stock Android — fighting Android for permissions, racing the user to apply policy. HardenedOS's Device Policy Controller is a system app, signed by the same chain as the OS itself. Policy is enforced at boot, before user-space apps see the request.
Runs as Android Device Owner from first boot. Signed in the same release chain as the OS. Cannot be disabled, sideloaded over, or escaped by a rogue user-space app — policy enforcement happens below them, not alongside.
Every policy your fleet might ever need lives in a single capability set — required apps, USB lock, kiosk, geofence, biometric gate. You opt in to what you want enforced via the admin panel. Changes ride the manifest stream, apply over the air on next sync, never require re-provisioning.
Upload APKs you require, recommend, or whitelist. Each pinned to a known signing-cert SHA-256. Silent install on activation, OTA install of new entries, automatic uninstall when removed from your manifest.
Network, sensors, storage, contacts — each can be denied, granted, or scoped per app. Storage scopes mean an app sees one folder. Contact scopes mean an app sees one group. Toggleable from your admin panel.
Every heartbeat carries a Titan-M2-signed attestation: bootloader state, OS image identity, build fingerprint. Your admin panel can refuse policy enforcement on a device whose chain doesn't verify — the device can't fake its way back in.
Activation, policy change, install, wipe, heartbeat-attested — every device event delivered to your webhook with HMAC-SHA256 signing. Drop-in for SIEM ingestion. Retries with exponential back-off; 24-hour delivery runway before abandonment.
Flash GrapheneOS onto a Pixel and enroll the DPC from another Android phone over USB-C — a guided wizard, no laptop or command line. Provision in the field, at a kiosk, or hand a customer a phone that sets up theirs. Already on GrapheneOS? Enroll in one tap. More →
Push a mobile data plan to any enrolled device over the management channel. The device prompts to install the eSIM with a single tap — no SIM swap, no carrier-store visit, no physical card to ship. Connectivity the moment a device is enrolled.
One OS image, every policy you'll need
Mandatory PIN, max-attempt wipe, biometric-only after idle, duress PIN. Defaults sane; resellers can tighten via the admin panel.
Required apps push silently. USB-data lock. Categories disable-able (cameras, sideloading, store install). Always-on VPN, allowed-Wi-Fi, blocked apps. Full audit log.
Kiosk mode, geofencing, mandatory remote attestation, hardware-locked settings, tamper response. Off by default; on for fleets that need them.
Surveillance ceiling, enforced server-side and on-device. No policy — even at maximum restriction — can silently capture audio, screen-record, log keystrokes, or hide the management UI from the user. Seven forbidden keys live in the policy schema and are rejected at write time. Request the policy spec →
For resellers
HardenedOS gives you the management primitives, the device fleet API, and the white-label surface — so your customers see your name, your colors, your support page, and your app catalog.
Boot screen, lock screen, wallpaper, accent colors, OS name override — your brand from first boot.
Top up your account, draw down per active device per month. No surprise bills, no per-API-call charges.
Mint activation codes in batches. Distribute APKs through your channel. Push branding updates over the air.
Every device event — activation, tier change, install — delivered to your endpoint with HMAC signing.
Supported devices
The managed tier runs on commodity Android — Pixel, Samsung, and other OEMs that support standard Device Owner provisioning. No OS changes. The optional Custom OS tier is Pixel-only (it needs a re-lockable bootloader to key verified boot to you):
Custom OS tier devices (Pixel). Newer devices get longer support — Pixel 8 series and later have a ~7-year update commitment from Google; the Custom OS tier rides that lifecycle. The managed tier follows each OEM's own support window.