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Privacy Policy

The Chaostreff Osnabrück e.V. stores just that much personal data as is absolutley necessary in order to offer information and services to visitors and members in reliable and safe way.

We ourselves operate the server as a VServer with all services. An evaluation of the logfiles of the services will be done exclusively by ourselves und only to detect possible errors or intrusion attempts.

We therefore decided explicitely to avoid the usage of cookies and tracking tools for the analysis of the data traffic like e.g. GoogleAnalytics.

We only pass any parts of the collected data according to legal demands e.g. to law enforcement authorities or tax authorities.

Subsequently, we break down exactly at which opportunity we store which data for what time period. The subsequently mentioned password storage does not mean the plain text storage of the password but the storage of the password hashes instead. We further describe the steps necessary to delete those data that are not deleted automatically.

Visit of our Website

Logfiles of the Web Server

Source-IP-Address, timestamp, used operating system, used web browser, referer URL and visited page.

Location of our Regular Meeting

We link OpenStreetMap to visualisze the location of our regular meeting.

Storage and Deletion

Automatic deletion of the web server logfiles as soon as they are elder than 10 days.

Registered Users of our Wiki

Account Information

Email address, passwort and full firstname and lastname. Cookies are used during a wiki session of a registered user to grant a fluent session. Furthermore, a change history is stored when editing any wiki page.

Storage and Deletion

Deletion of an account by email to:

Registered Users of our Mailing Lists

Account Information

Email address and password.

Message Contents

All message contents are stored in the archiv of the mailing list. The archiv of the mailing list is accessible by registered users only.

Storage and Deletion

Automatic deletion of the account information as soon as a user has deregistered from all lists. Alternatively, request deletion by informal email to:

Member Administration

Contact Data

Firstname and lastname, date of birth, street, postal and location, email address, phone number, GnuPG fingerprint, Chaos-Nr. and transfered contributions.

Storage and Deletion

All data of former members will be deleted according to statutory provisions.

Member Account for Services


A member account is exclusively reserved to members. It will be created first, if requested by a member using an informal email to:

Account Information

Username, firstname, lastname and password.

Provieded Services

A member account provides following services on our server to any member: Login shell, IMAP-/SMTP server and Jabber server.

Storage and Deletion

Deletion of a member account by informmal email to:

Serives for Members

Logfiles when using the Login Shell

Source IP address, timestamp of login and logout and the username. Optional: Every user can decide, if executed shell commands are saved as shell history.

Logfiles of the IMAP/SMTP Server

Source IP address, timestamp and username. When using our SMTP server the contacted SMTP server is stored as target IP address.

Logfiles of the Jabber Server

Every login and logout process, the last ten messages of multi-user chats in our chat rooms are stored and provided on entry of a chat room. All other messages are deleted automatically. Long messages (including images) are stored automatically in a clipboard. They are deleted automatically after 24 hours. No messages are stored during any two-party chat.

Storage and Deletion

Automatically deletion of the logfiles of all services as soon as they are elder than 10 days.

Web Key Directory (WKD)

Each member can request by an informal email to his public GPG key to be stored in the WKD of the domain of our association. This requires the association email address of the member being an identity of the public GPG key. Deletion of the public GPG key: By an informal email to

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