Subgraph (operating system)

Subgraph OS

OS family	Linux (Unix-like)
Working state	Discontinued [1]
Source model	Open source
Final preview	2017.09.22 [2] / 22 September 2017;7 years ago (2017-09-22)
Repository	github.com/orgs/subgraph/repositories
Kernel type	Monolithic (Linux)
Userland	GNU
Influenced by	Tails, Qubes OS
Default user interface	GNOME 3
License	GPLv3+
Official website	subgraph.com

Subgraph OS was a Debian-based project designed to be resistant to surveillance and interference by sophisticated adversaries over the Internet. ^{[3] [4] [5] [6] [7] [8]} It has been mentioned by Edward Snowden as showing future potential. ^[9]

Subgraph OS was designed to be locked down, with a reduced attack surface, to increase the difficulty to carry out certain classes of attack against it. This was accomplished through system hardening and a proactive, ongoing focus on security and attack resistance. Subgraph OS also placed emphasis on ensuring the integrity of installed software packages through deterministic compilation.

The last update of the project's blog was in September 2017, ^[10] and all of its GitHub repositories haven't seen activity since 2020. ^[11]

Features

Some of Subgraph OS's notable features included:

• Linux kernel hardened with the grsecurity and PaX patchset. ^[12]
• Linux namespaces and xpra for application containment.
• Mandatory file system encryption during installation using LUKS.
• Configurable firewall rules to automatically ensure that network connections for installed applications are made using the Tor anonymity network. Default settings ensure that each application's communication is transmitted via an independent circuit on the network.
• GNOME Shell integration for the OZ virtualization client, ^[13] which runs apps inside a secure Linux container, targeting ease-of-use by everyday users. ^[14]

Security

Subgraph OS's sandbox containers have been critiqued as inferior to Qubes OS's virtualization. An attacker can trick a Subgraph user to run a malicious unsandboxed script via the default Nautilus file manager or in the terminal. It is also possible to run malicious code containing .desktop files (which are used to launch applications). Malware can also bypass Subgraph OS's application firewall. Also, by design, Subgraph does not isolate the network stack like Qubes OS. ^[15]

See also

• Tails (operating system)
• Qubes OS

References

1. "DistroWatch.com: Subgraph OS". DistroWatch.com. 2023-01-30. Retrieved 2023-10-13.
2. "Subgraph OS September 2017 ISO Availability". subgraph.com. Retrieved 22 September 2017.
3. "Subgraph: This Security-Focused Distro Is Malware's Worst Nightmare". Linux.com. 2018-01-26. Retrieved 2023-10-13.
4. "DistroWatch.com: Put the fun back into computing. Use Linux, BSD". DistroWatch.com. 2017-01-30. Retrieved 2023-10-13.
5. updated, Mayank SharmaContributions from Brian Turner last (May 9, 2022). "Best Linux distro for privacy and security of 2023". TechRadar.
6. "Subgraph announces security conscious OS" – via www.wired.co.uk.
7. "Secure Your Online Privacy With These Linux Distributions". It's FOSS. February 22, 2017.
8. "Subgraph OS, a new security-centric desktop distribution [LWN.net]". lwn.net.
9. Styles, Kirsty (16 March 2016). "Subgraph will be Snowden's OS of choice – but it's not quite ready for humans yet". The Next Web. Retrieved 7 July 2016.
10. "Subgraph - Blog". subgraph.com. Retrieved 2023-08-03.
11. "Subgraph". GitHub. Retrieved 2023-08-03.
12. "Hardening". subgraph.com. Retrieved 2023-08-03.
13. "subgraph/oz: OZ: a sandboxing system targeting everyday workstation applications". GitHub. Retrieved 2023-10-13.
14. "GitHub - OZ: a sandboxing system targeting everyday workstation applications". Subgraph. Retrieved 6 October 2016.
15. "Breaking the Security Model of Subgraph OS | Micah Lee's Blog". micahflee.com. Retrieved 2017-04-25.

External links

• Official website
• Subgraph (operating system) at DistroWatch