223 lines
15 KiB
HTML
223 lines
15 KiB
HTML
<!DOCTYPE html>
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<html lang="en" prefix="og: https://ogp.me/ns#">
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<head>
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<meta charset="utf-8"/>
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<title>GrapheneOS</title>
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<meta name="description" content="GrapheneOS is a security and privacy focused mobile OS with Android app compatibility."/>
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</head>
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<body>
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<header>
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<nav id="site-menu">
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<ul>
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<li aria-current="page"><a href="/">GrapheneOS</a></li>
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<li><a href="/features">Features</a></li>
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<li><a href="/install">Install</a></li>
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<li><a href="/build">Build</a></li>
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<li><a href="/usage">Usage</a></li>
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<li><a href="/faq">FAQ</a></li>
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<li><a href="/releases">Releases</a></li>
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<li><a href="/source">Source</a></li>
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<li><a href="/articles/">Articles</a></li>
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<li><a href="/donate">Donate</a></li>
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<li><a href="/contact">Contact</a></li>
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</ul>
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</nav>
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</header>
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<main id="grapheneos">
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<h1><a href="#grapheneos">GrapheneOS</a></h1>
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<p>GrapheneOS is an privacy and security focused mobile OS with Android app
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compatibility developed as a non-profit <a href="/source">open source</a> project.
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It's focused on the research and development of privacy and security technology
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including substantial improvements to sandboxing, exploit mitigations and the
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permission model. GrapheneOS also develops various apps and services with a focus on
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privacy and security. Vanadium is a hardened variant of the Chromium browser and
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WebView specifically built for GrapheneOS. GrapheneOS also includes our minimal
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security-focused PDF Viewer, our hardware-based Auditor app / attestation service
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providing local and remote verification of devices, and the externally developed
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Seedvault encrypted backup which was initially developed for inclusion in
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GrapheneOS.</p>
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<p>GrapheneOS improves the privacy and security of the OS from the bottom up. It
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deploys technologies to mitigate whole classes of vulnerabilities and make exploiting
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the most common sources of vulnerabilities substantially more difficult. It improves
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the security of both the OS and the apps running on it. The app sandbox and other
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security boundaries are fortified. GrapheneOS tries to avoid impacting the user
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experience with the privacy and security features. Ideally, the features can be
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designed so that they're always enabled with no impact on the user experience and no
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additional complexity like configuration options. It's not always feasible, and
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GrapheneOS does add various toggles for features like the Network permission, Sensors
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permission, restrictions when the device is locked (USB peripherals, camera, quick
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tiles), etc. along with more complex user-facing privacy and security features with
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their own UX.</p>
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<p>The <a href="/features">features page</a> provides an overview of the substantial
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privacy and security improvements added by GrapheneOS to the Android Open Source
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Project.</p>
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<p>Official releases are available on the <a href="/releases">releases page</a> and
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installation instructions are on the <a href="/install">install page</a>.</p>
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<section id="never-google-services">
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<h2><a href="#never-google-services">No Google apps or services</a></h2>
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<p>GrapheneOS will never include either Google Play services or another implementation
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of Google services like microG. Those are not part of the Android Open Source Project
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and are not required for baseline Android compatibility. Apps designed to run on
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Android rather than only Android with bundled Google apps and services already work on
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GrapheneOS, so a huge number of both open and closed source apps are already available
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for it.</p>
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<p>AOSP APIs not tied to Google but that are typically provided via Play services will
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continue to be implemented using open source providers like the Seedvault backup app.
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Text-to-speech, voice-to-text, non-GPS-based location services, geocoding,
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accessibility services, etc. are examples of other open Android APIs where we need to
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develop/bundle an implementation based on existing open source projects. GrapheneOS is
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not going to be implementing these via a Google service compatibility layer because
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these APIs are in no way inherently tied to Google services.</p>
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<p>We're developing support for installing microG as a regular app without any special
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privileges. This will allow users to choose to use a partial reimplementation of Play
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services in a specific profile. We won't be supporting arbitrary signature spoofing by
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microG or any other app since it seriously compromises the OS security model. Guarding
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it by a permission isn't enough, both because users don't understand the substantial
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impact on the security model and it weakens security for the verified boot threat
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model where persistent state such as granted permissions is controlled by an attacker.
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Instead, the OS will specifically make microG signed with our microG signing key
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appear to other apps as signed with the Google Play services key. It won't bypass any
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other signature checks, only a check for Play services, and other apps also won't be
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able to pretend to be Play services to intercept FCM messages, obtain Google
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credentials, etc. It will not be granted any privileged permissions or other special
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capabilities unavailable to a regular untrusted app.</p>
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<p>In the longer term, we also plan to offer a more minimal compatibility layer which
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pretends that Google services are offline rather than implementing them. Users will
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have the choice between no implementation of Play services, microG and this minimal
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implementation not implementing Google services. This choice will be available because
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we won't be bundling any of this into the OS. Ideally, Google themselves would support
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installing the official Play services as a regular Android app, rather than taking the
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monopolistic approach of forcing it to be bundled into the OS in a deeply integrated
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way with special privileged permissions and capabilities unavailable to other cloud
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service providers competing with them.</p>
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</section>
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<section id="history">
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<h2><a href="#history">History</a></h2>
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<p>GrapheneOS was founded by Daniel Micay in late 2014. It started as a solo project
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incorporating his previous open source privacy/security work. The project initially
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created a port of OpenBSD malloc to Android's Bionic libc and a port of the PaX kernel
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patches to the kernels for the supported devices. It quickly expanded to having a
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large set of homegrown privacy and security improvements, particularly low-level
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hardening work on the compiler toolchain and Bionic. Work began on landing code
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upstream in AOSP and other upstream projects. A substantial portion of these early
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changes were either successfully landed upstream or heavily influenced the upstream
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changes which replaced them. The project was able to move very quickly in these days
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because there was so much low hanging fruit to address and it wasn't yet trying to
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produce a highly robust, production quality OS.</p>
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<p>In late 2015, a company was incorporated which became the primary sponsor of the
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project. GrapheneOS was previously known as CopperheadOS while it was sponsored by
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this company. The intention was to use the company to build a business around
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GrapheneOS selling support, contract work and customized proprietary variants of the
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OS. The company was supposed to serve the needs of the open source project, rather
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than vice versa. It was explicitly agreed that GrapheneOS would remain
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independently owned and controlled by Daniel Micay. This company failed to live up
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the promises and is no longer associated in any way with GrapheneOS. The company
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ended up holding back the open source project and taking far more from it than was
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provided to it.</p>
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<p>In 2018, the company was hijacked by the CEO who attempted to take over the project
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through coercion, but they were rebuked. They seized the infrastructure and stole the
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donations, but the project successfully moved on without them and has been fully
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revived. Since then, they've taken to fraudulently claiming ownership and authorship
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of our work, which has no basis in fact. They've tried to retroactively change the
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terms of their involvement and rewrite the history of the project. These claims are
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easily falsified through the public record and by people involved with the open source
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project and the former sponsor. This former sponsor has engaged in a campaign of
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misinformation and harassment of contributors to the project. Be aware that they are
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actively trying to sabotage GrapheneOS and are engaging in many forms of attacks
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against the project, the developers, contributors and supporters. Meanwhile, they
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continue profiting from our open source work which they falsely claim as their own
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creation.</p>
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<p>After splitting from the former sponsor, the project was rebranded to
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AndroidHardening and then to GrapheneOS and it has continued down the original path of
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being an independent open source project. It will never again be closely tied to any
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particular sponsor or company.</p>
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</section>
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<section id="upstream">
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<h2><a href="#upstream">Upstream contributions</a></h2>
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<p>GrapheneOS has made substantial contributions to the privacy and security of the
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Android Open Source Project, along with contributions to the Linux kernel, LLVM,
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OpenBSD and other projects. Much of our past work is no longer part of the downstream
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GrapheneOS project because we've successfully landed many patches upstream. We've had
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even more success with making suggestions and participating in design discussions to
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steer things in the direction we want. Many upstream changes in AOSP such as removing
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app access to low-level process, network, timing and profiling information originated
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in the GrapheneOS project. The needs of the upstream projects are often different from
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ours, so they'll often reimplement the features in a more flexible way. We've almost
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always been able to move to using the upstream features and even when we still need
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our own implementation it helps to have the concepts/restrictions considered by the
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upstream project and apps needing to be compatible with it. Getting features upstream
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often leads to an improved user experience and app compatibility.</p>
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</section>
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<section id="copyright-and-licensing">
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<h2><a href="#copyright-and-licensing">Copyright and licensing</a></h2>
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<p>GrapheneOS is permissively licensed and has never used copyright assignment, so
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the work is owned by the developers. See the
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<a href="/faq#copyright-and-licensing">FAQ entry on copyright and licensing</a>
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for more details.</p>
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</section>
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<section id="roadmap">
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<h2><a href="#roadmap">Roadmap</a></h2>
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<p>See <a href="/faq#roadmap">the FAQ section on the roadmap</a>.</p>
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</section>
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<section id="device-support">
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<h2><a href="/faq#device-support">Device support</a></h2>
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<p>See <a href="/faq#device-support">the FAQ section on device support</a>.</p>
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</section>
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</main>
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<footer>
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<a href="/"><img src="/logo.png" width="512" height="512" alt=""/>GrapheneOS</a>
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<ul id="social">
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<li><a href="https://twitter.com/GrapheneOS">Twitter</a></li>
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<li><a href="https://github.com/GrapheneOS">GitHub</a></li>
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<li><a href="https://reddit.com/r/GrapheneOS">Reddit</a></li>
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<li><a href="https://www.linkedin.com/company/grapheneos/">LinkedIn</a></li>
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</ul>
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</footer>
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</body>
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</html>
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