Red Star OS () is a
North Korea
North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korea, Korean Peninsula and borders China and Russia to the north at the Yalu River, Yalu (Amnok) an ...
n
Linux distribution
A Linux distribution, often abbreviated as distro, is an operating system that includes the Linux kernel for its kernel functionality. Although the name does not imply product distribution per se, a distro—if distributed on its own—is oft ...
, with development first starting in 1998 at the
Korea Computer Center (KCC).
History
Prior to Red Star OS' release, computers in North Korea typically used modified versions of
Microsoft Windows
Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...
with
North Korean language packs installed.
Content
Browser
Red Star OS features a modified
Mozilla Firefox
Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements curren ...
browser called
''Naenara'' ("Our country" in Korean), which is used for browsing the
Naenara
Naenara () is the official web portal of the North Korean government.
History
Naenara was the first website in North Korea, and was created in 1996.
Usage
Naenara carries publications such as '' The Pyongyang Times'', ' magazine, '' Korea ...
web portal on North Korea's
national intranet known as
Kwangmyong. Naenara comes with two search engines.
Other software
Other software includes a
text editor
A text editor is a type of computer program that edits plain text. An example of such program is "notepad" software (e.g. Windows Notepad). Text editors are provided with operating systems and software development packages, and can be used to c ...
, an
office suite
Productivity software (also called personal productivity software or office productivity software) is application software used for producing information (such as documents, presentations, worksheets, databases, charts, graphs, digital paintin ...
, an
e-mail client
An email client, email reader or, more formally, message user agent (MUA) or mail user agent is a computer program used to access and manage a user's email.
A web app, web application which provides message management, composition, and receptio ...
,
audio and video players, a
file sharing program, and
video games
A video game or computer game is an electronic game that involves interaction with a user interface or input device (such as a joystick, game controller, controller, computer keyboard, keyboard, or motion sensing device) to generate visual fe ...
.
Red Star OS 3 comes with a customized version of
OpenOffice OpenOffice or open office may refer to:
Computing Software
* OpenOffice.org (OOo), a discontinued open-source office software suite, originally based on StarOffice
* Apache OpenOffice (AOO), a derivative of OOo by the Apache Software Foundation, ...
called ''Sogwang Office''.
Specifications
The operating system utilizes customized versions of
KDE Software Compilation
The KDE Software Compilation (KDE SC) was an umbrella term for the desktop environment plus a range of included applications produced by KDE. From its 1.0 release in July 1998 until the release of version 4.4 in February 2010, the Software Compi ...
. Earlier versions had
KDE 3-based desktops.
Version 3, like its predecessors, utilizes
Wine
Wine is an alcoholic drink made from Fermentation in winemaking, fermented fruit. Yeast in winemaking, Yeast consumes the sugar in the fruit and converts it to ethanol and carbon dioxide, releasing heat in the process. Wine is most often made f ...
, a compatibility layer that allows
Windows
Windows is a Product lining, product line of Proprietary software, proprietary graphical user interface, graphical operating systems developed and marketed by Microsoft. It is grouped into families and subfamilies that cater to particular sec ...
programs to be run under Linux.
Version 3.0 closely resembles
Apple
An apple is a round, edible fruit produced by an apple tree (''Malus'' spp.). Fruit trees of the orchard or domestic apple (''Malus domestica''), the most widely grown in the genus, are agriculture, cultivated worldwide. The tree originated ...
's
macOS
macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...
, whereas previous versions more closely resembled
Windows XP
Windows XP is a major release of Microsoft's Windows NT operating system. It was released to manufacturing on August 24, 2001, and later to retail on October 25, 2001. It is a direct successor to Windows 2000 for high-end and business users a ...
; current North Korean leader
Kim Jong-un
Kim Jong Un (born 8 January 1983 or 1984) is a North Korean politician and dictator who has served as supreme leader of North Korea since 2011 and general secretary of the Workers' Party of Korea (WPK) since 2012. He is the third son of Kim ...
was seen with an
iMac
The iMac is a series of all-in-one computers from Apple Inc., sold as part of the company's Mac (computer), Mac family of computers. First introduced in 1998, it has remained a primary part of Apple's consumer desktop offerings since and evol ...
on his desk in a 2013 photo, indicating a possible connection to the redesign.
The Red Star OS is only available in
Korean,
localized with
North Korean terminology and spelling,
although it is possible to change the language on the
BIOS boot menu, or by modifying the
disk image
A disk image is a snapshot of a storage device's content typically stored in a file on another storage device.
Traditionally, a disk image was relatively large because it was a bit-by-bit copy of every storage location of a device (i.e. every ...
.
History
Version 1.0/Beta

The first version appeared in 2008. It is very reminiscent of the Windows XP operating system.
It featured the "
Naenara
Naenara () is the official web portal of the North Korean government.
History
Naenara was the first website in North Korea, and was created in 1996.
Usage
Naenara carries publications such as '' The Pyongyang Times'', ' magazine, '' Korea ...
" web browser, based on Mozilla Firefox, and an Office suite based on Open Office, called "Uri 2.0".
Wine
Wine is an alcoholic drink made from Fermentation in winemaking, fermented fruit. Yeast in winemaking, Yeast consumes the sugar in the fruit and converts it to ethanol and carbon dioxide, releasing heat in the process. Wine is most often made f ...
is also included.
One copy has been leaked online. The screenshots of the operating system were officially published by KCNA and discovered by South Korean news sites.
Version 2.0

The development of version 2.0 began in March 2008, and was completed on 3 June 2009. Like its predecessor, its appearance resembles Windows XP, and was priced at 2000
North Korean won
The Korean People's won, more commonly known as the North Korean won (currency symbol, symbol: ₩; ISO 4217, code: KPW; ) and sometimes known as the Democratic People's Republic of Korea won (), is the official currency of North Korea. It is ...
(approx. US$15).
The "Naenara" web browser is also included in this version. The browser was released on 6 August 2009, as part of the operating system, and was priced at 4000
North Korean won
The Korean People's won, more commonly known as the North Korean won (currency symbol, symbol: ₩; ISO 4217, code: KPW; ) and sometimes known as the Democratic People's Republic of Korea won (), is the official currency of North Korea. It is ...
(approx. US$28).
The operating system uses a special keyboard layout that differs greatly from the South Korean standard layout.
Version 3.0
Version 3.0 was introduced on 15 April 2012, and its appearance resembles
macOS
macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...
operating systems of various versions. The new version supports both
IPv4
Internet Protocol version 4 (IPv4) is the first version of the Internet Protocol (IP) as a standalone specification. It is one of the core protocols of standards-based internetworking methods in the Internet and other packet-switched networks. ...
and
IPv6
Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communication protocol, communications protocol that provides an identification and location system for computers on networks and routes traffic ...
addresses.
Regulations
The operating system comes pre-installed with a number of applications that monitor its users.
If a user tries to disable security functions, an error message will appear on the computer, or the operating system will crash and reboot.
In addition, a watermarking tool integrated into the system marks all media content with the hard drive's serial number, allowing the North Korean authorities to trace the spread of files.
The system also has hidden "antivirus" software that is capable of removing censored files that are remotely stored by the North Korean Secret Service.
There is a user group called "
administrator" in the operating system. Users do not have root access by default, but are able to elevate their privileges to root by running a built-in utility called "rootsetting".
However, provisions are made in kernel modules to deny even root users access to certain files, and extensive system integrity checks are done at boot time to ensure these files have not been modified.
The operating system was leaked by
Zammis Clark ("SlipStream").
Version 4.0
Little information is available on version 4.0.
According to ''
The Pyongyang Times
''The Pyongyang Times'' is a weekly state-controlled English and French-language newspaper published in the North Korean capital, Pyongyang, by the Foreign Languages Publishing House. It is the foreign-language edition of the '' Pyongyang Sin ...
'', an official version of Red Star OS 4.0 had been developed by January 2019, with full network support as well as system and service management tools.
In June and July 2020,
South Korea
South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
's NKEconomy (NK경제) obtained a copy of Red Star OS 4.0 and have published articles about it.
Vulnerabilities
In 2016, the
computer security
Computer security (also cybersecurity, digital security, or information technology (IT) security) is a subdiscipline within the field of information security. It consists of the protection of computer software, systems and computer network, n ...
company Hacker House found a security vulnerability in the integrated web browser Naenara. This vulnerability makes it possible to execute commands on the computer if the user clicks on a crafted link.
Media attention

The Japan-based
North Korea
North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korea, Korean Peninsula and borders China and Russia to the north at the Yalu River, Yalu (Amnok) an ...
-affiliated newspaper ''
Choson Sinbo'' interviewed two Red Star OS programmers in June 2006.
English-language technology blogs, including
Engadget
Engadget ( ) is a technology news, reviews and analysis website offering daily coverage of gadgets, consumer electronics, video games, gaming hardware, apps, social media, streaming, AI, space, robotics, electric vehicles and other potentially ...
and
OSnews
OSNews is a computing online newspaper. It originally focused on operating systems and their related technologies that launched in 1997, but is now aggregating consumer electronics news. The content is managed by a group of editors and the owner. ...
, as well as South Korean
wire services such as
Yonhap
Yonhap News Agency (; ) is a major news agency in South Korea. It is based in Seoul, South Korea. Yonhap provides news articles, pictures, and other information to newspapers, TV networks and other media in South Korea.
History
Yonhap was esta ...
, went on to repost the content.
In late 2013, Will Scott, who was visiting the
Pyongyang University of Science and Technology, purchased a copy of Red Star OS 3.0 from a KCC retailer in southern Pyongyang, and uploaded screenshots of the operating system to the internet.
In 2015, two German researchers speaking at the
Chaos Communication Congress
The Chaos Communication Congress is an annual hacker conference organized by the Chaos Computer Club. The congress features a variety of lectures and workshops on technical and political issues related to security, cryptography, privacy and ...
described the internal operation of the OS. The system is known to
watermark
A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations i ...
all files on portable media attached to computers in order to aid in tracking the underground market of
USB flash drive
A flash drive (also thumb drive, memory stick, and pen drive/pendrive) is a data storage device that includes flash memory with an integrated USB interface. A typical USB drive is removable, rewritable, and smaller than an optical disc, and u ...
s used to exchange foreign films, music and writing.
See also
*
Internet in North Korea
*
Telecommunications in North Korea
References
External links
*
Download"*
*
redstar-tools A tool used for analyzing the system.
{{Portal bar, Free and open-source software, Linux
2008 software
Information technology in North Korea
Linux distributions offering KDE desktop environment
Korean-language computing
Linux distributions
RPM-based Linux distributions
State-sponsored Linux distributions