Since this is your first time creating another ID, tap on the text field at the bottom, create a Speek ID, and hit Add. If you intend to use different Speek IDs to communicate with different people, Speek offers you the ability to run multiple instances with different Speek IDs.įor this, click on the hamburger menu icon and select Open Other Identity. Here, tap on the copy icon below the Speek ID field and send it across to the other user.Īfter this, they can add your Speek ID to initiate a connection request, which you can accept to start exchanging messages and files. For this, click on the hamburger menu icon and select View Speek ID. Accept a Connection Request in SpeekĪlthough using a contact's Speek ID is one way to add them, you can also send your Speek ID across to the other person and ask them to initiate the request. Subgraph OS will soon be using gosecco, a new library for seccomp-bpf that lets policies be expressed in a format that is more efficient, cross-platform, and understandable to humans.Once done, you can start exchanging messages and files with the new contact, just like you'd do with most messaging apps. Many applications only need about one-third to one-half of the available system calls to function, and the Subgraph Oz sandbox framework ensures that the unnecessary system calls cannot be invoked (Oz can and often does restrict system calls to specific known parameters to further narrow kernel attack surface through system calls such as ioctl(2)). Subgraph is regularly instrumenting applications and libraries to limit the exposed kernel API to what is necessary for each sandboxed application to function. The technologies underlying Oz include Linux namespaces, restricted filesystem environments, desktop isolation, and seccomp bpf to reduce kernel attack surface through system call whitelists. For example, the PDF viewer and the image viewer do not have access to any network interface in the sandbox they're configured to run in. Access to system resources are only granted to applications that need them. This sandbox framework, known as Oz, unique to Subgraph OS, is designed to isolate applications from each other and the rest of the system. Subgraph OS runs exposed or vulnerable applications in sandbox environments. This is done to proactively reduce kernel attack surface. ![]() The Subgraph OS kernel (4.9) is also built with fewer features to the extent possible producing a widely-usable desktop operating system. grsecurity, PaX, and RAP are essential defenses implemented in Subgraph OS. This is an important mitigation against contemporary exploitaion techniques and greatly increases the resistance of the kernel to modern exploits that can be used to escalate privileges once an application on the endpoint is breached. ![]() The Subgraph OS kernel is also built with the recently released RAP (demo from the test patch) security enhancements designed to prevent code-reuse (i.e. In addition to making the kernel more resistant to attacks, grsecurity and PaX security features offer strong security protection to all processes running without modification (i.e. Subgraph OS includes a kernel hardened with the well-respected grsecurity/PaX patchset for system-wide exploit and privilege escalation mitigation. Hardened kernel built with grsecurity, PaX, and RAP This is accomplished through system hardening and proactive, ongoing research on defensible system design. Subgraph OS is designed to be difficult to attack. Subgraph OS was designed to reduce the risks in endpoint systems so that individuals and organizations around the world can communicate, share, and collaborate without fear of surveillance or interference by sophisticated adversaries through network borne attacks. Subgraph OS includes strong system-wide attack mitigations that protect all applications as well as the core operating system, and key applications are run in sandbox environments to reduce the impact of any attacks against applications that are successful. Even in alpha, Subgraph OS looks and feels like a modern desktop operating system. It is also meant to be familiar and easy to use. Subgraph OS is a desktop computing and communications platform that is designed to be resistant to network-borneĮxploit and malware attacks. Subgraph OS: Adversary resistant computing platform
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