A short description (in german) how to use the facebook chat with it's XMPP interface.
An easy method to add tags to your static Jekyll generated pages and blogs
This blog post should provide a short overview of TAN alternatives and methods as well as their pitfalls and security
The blogsphere is a web of interconnected websites. As usual websites are linked like all pages in the WWW but on the other hand they provide an easy way of notifying each other of being referenced by a third party. Pingback is - besides trackbacks - the (XML-RPC based) technology used for that notification.
A short cheat sheet on how to use the git version control system
A short description how to use TOR as a normal user and what to be aware of when using TOR
This article contains a short tutorial about multifactor authentication, various factors that may be used and a tutorial on how to use the Yubikey hardware token for web- and local as well as SSH (pam) authentication on FreeBSD.
Because it's sometimes said TOR hidden services are only used by criminals this post lists a few more credible services and some reasons why one might use them.