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As an addition to the content on this web site we suggest our dear readers to follow us on Twitter now. The account  contains a variety of  assorted content in the field of cyber and information  security.
The Heartbleed Catastrophe Revised
Thursday, 15 May 2014
In early April 2014 two independent IT security specialists from Codenomicon and Google Security discovered a flaw introduced into OpenSSL in December 2011. This article does not cover the happening itself, but focuses on common misunderstandings and wrong interpretations with regards to the catastrophe.

One common misinterpretation was that "Heartbleed", which is the way the flaw/bug was prematurely called, would only affect current versions of OpenSSL. However the truth is that older versions are affected as well – number 1.01 and 1.02 to be more precise. OpenSSL is a piece of software to encrypt traffic of connections on transport layer, which mostly affects TCP connections since the TCP/IP-stack is the dominant protocol-stack on the internet consisting of about 500+ different protocols. Since a lot of higher-level protocols, such as HTTP partially rely on encryption TLS/SSL is employed on a regular basis to satisfy such constraints. For a disambiguation between TLS/SSL and SSH we suggest the article on Snailbook for reference. Basically OpenSSH is a protocol with several sub-protocols. (e.g. for multiplexing, password-based authentication, terminal management, etc.) which implements non-PKI authentication from S (session) to A (application) layer of the ISO:OSI model.
Last Updated (Wednesday, 01 April 2015)
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CMS Change of the ✛ΔO Web Portal
Wednesday, 15 May 2013
After two years in the making the organization released its new offline Web Content Management System named »LXCMS« to improve overall security.

The new system is set to improve the situation in the area of content delivery, though Joomla! SE was our trusted wCMS software in operation for a long time. However the underlying Joomla! was always developed for the masses to fit their unspecific needs. Additionally Joomla! was always licensed under the GNU/GPL, unlike our new LXCMS which was put under our much simpler TDL 2010. With Joomla! SE we could not have done the same thing.
Last updated (Wednesday, 01 April 2015)
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Chrome OS and Browser (Part 1)
Wednesday, 01 February 2012
During the last years Google's browser Chrome from the Chromium software project has become increasingly popular. This article focuses on its security design.

The Linux kernel used in (most unixoid operating systems) every single GNU/Linux distribution, including Chrome OS, inherits the traditional UNIX semantics which consists of two basic levels for process execution, file system object permissions and thus access restriction, namely "root" and "non-root". Thereby root processes are allowed to do nearly everything on the system, whereas non-root processes are limited in their executional behavior.
Last updated (Wednesday, 01 February 2012)
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