chore: replace broken links

.gitignore

@@ -1,3 +1,4 @@
 resources/
 public/
 .hugo_build.lock
+.lycheecache

content/blog/2014-01-why-free-choice-of-routers-is-an-unnegotiable-must.md

@@ -13,7 +13,7 @@ tags:
 
 ---
 
-In my opinion, the latest NSA leaks reached a new level of boldness. Oh wait, maybe you are one of the people that keep saying "*Of course NSA is spying on all of us, but I’m safe: I use Tor/VPN, deleted my Facebook account, and I completely switched to [secure operating systems](https://blogs.fsfe.org/the_unconventional/2013/06/29/more-work-to-maintain-my-privacy/), so I got this going for me.*" If so I congratulate you, these are important steps and I hope there will be more people like you.
+In my opinion, the latest NSA leaks reached a new level of boldness. Oh wait, maybe you are one of the people that keep saying "*Of course NSA is spying on all of us, but I’m safe: I use Tor/VPN, deleted my Facebook account, and I completely switched to [secure operating systems](http://web.archive.org/web/20130928222506/http://blogs.fsfe.org/the_unconventional/2013/06/29/more-work-to-maintain-my-privacy/), so I got this going for me.*" If so I congratulate you, these are important steps and I hope there will be more people like you.
 
 {{< figure src="/img/blog/nsa-headwater-screen.jpg" caption="NSA Headwater Implant" >}}
 

content/blog/2014-02-wirklich-sichere-whatsapp-alternativen.md

@@ -87,4 +87,4 @@ Auf lange Sicht hin lohnt es sich, **TextSecure** im Auge zu behalten. Wenn alle
 
 > Nochmal: **Threema** klingt zwar toll, ist es aber allein vom Konzept nicht, da der Quellcode nicht öffentlich ist. _Nur Freie Software schützt effektiv die Sicherheit und Privatsphäre von uns Anwendern_ – alles andere sind schlicht Werbelügen und hohle Phrasen.
 
-PS: Während dem Schreiben habe ich noch [einen netten Artikel](http://missingm.co/2014/02/fighting-dishfire-the-state-of-mobile-cross-platform-encrypted-messaging/) gefunden, der nochmal einige Apps gegenüberstellt und dabei auch mehr auf die dahinterliegende Technik eingeht.
+PS: Während dem Schreiben habe ich noch [einen netten Artikel](http://web.archive.org/web/20210512210108/https://missingm.co/2014/02/fighting-dishfire-the-state-of-mobile-cross-platform-encrypted-messaging/) gefunden, der nochmal einige Apps gegenüberstellt und dabei auch mehr auf die dahinterliegende Technik eingeht.

content/blog/2014-09-birthday-calendar-with-owncloud-via-caldav.md

@@ -14,7 +14,7 @@ tags:
 
 Not a big issue in this blog post but an important one. Maybe I can save you some valuable time if you ever look for such a function.
 
-As you know I’m a heavy user of [ownCloud](http://owncloud.org) and you also might know that synchronisation is a big topic for me. And the third thing you should know that forgetting a good friend’s birthday really su... well, it’s no good style. This almost happened to me some days ago because I couldn’t check it on my Notebook with Thunderbird. My setup looks like this: All contacts (with birthday tags) in ownCloud, and these CardDAV address books are synced with my Android phone and Thunderbird/[SOGo-Connector](http://www.sogo.nu/downloads/frontends.html) on my notebook, as well as the CalDAV calendars with [Lightning](https://addons.mozilla.org/de/thunderbird/addon/lightning/).
+As you know I’m a heavy user of [ownCloud](http://owncloud.org) and you also might know that synchronisation is a big topic for me. And the third thing you should know that forgetting a good friend’s birthday really su... well, it’s no good style. This almost happened to me some days ago because I couldn’t check it on my Notebook with Thunderbird. My setup looks like this: All contacts (with birthday tags) in ownCloud, and these CardDAV address books are synced with my Android phone and Thunderbird/[SOGo-Connector](http://web.archive.org/web/20160123232734/http://www.sogo.nu:80/downloads/frontends.html) on my notebook, as well as the CalDAV calendars with [Lightning](http://web.archive.org/web/20170918023652/https://addons.mozilla.org/de/thunderbird/addon/lightning/).
 
 <!--more-->
 

content/blog/2014-09-setting-openstreetmap-as-default-in-thunderbird-contacts.md

@@ -34,4 +34,4 @@ Restart Thunderbird and test again with an existing contact. By clicking on the
 [1]: /uploads/tb-map-contact.png
 [2]: http://openstreetmap.org
 [3]: https://support.mozilla.org/en-US/kb/config-editor
-[4]: https://developer.mozilla.org/en-US/docs/Mozilla/Thunderbird/Hidden_prefs
+[4]: http://web.archive.org/web/20140904073922/https://developer.mozilla.org/en-US/docs/Mozilla/Thunderbird/Hidden_prefs

content/blog/2015-09-german-government-wants-authorities-to-advertise-pdfreaders.md

@@ -41,4 +41,4 @@ So yes please, German authorities, listen to your CIO: Use and help improving Fr
 
  [1]: https://fsfe.org
  [2]: https://www.fsfe.org/campaigns/pdfreaders/pdfreaders.html
- [3]: http://www.cio.bund.de/Web/DE/Architekturen-und-Standards/Migrationsleitfaden-und-Migrationshilfen/migrationsleitfaden_node.html
+ [3]: http://web.archive.org/web/20220121073702/http://www.cio.bund.de/Web/DE/Architekturen-und-Standards/Migrationsleitfaden-und-Migrationshilfen/migrationsleitfaden_node.html

content/blog/2016-02-switching-my-code-from-gitweb-to-gogs.md

@@ -62,6 +62,6 @@ Additionally, I more deeply elaborated the SSH problems and solutions if you’r
  [3]: http://gogs.io
  [4]: https://src.mehl.mx
  [5]: https://uberspace.de
- [6]: https://geeklabor.de/archives/195-Gogs-auf-Uberspace-installieren.html
+ [6]: http://web.archive.org/web/20180117164149/https://geeklabor.de/archives/195-Gogs-auf-Uberspace-installieren.html
  [7]: https://src.mehl.mx/mxmehl
  [8]: http://src-old.mehl.mx

content/blog/2016-11-openrheinruhr-2016-a-report-of-iron-and-freedom.md

@@ -41,7 +41,7 @@ Sunday was far more relaxed than the day before. We had time to talk to more peo
  [2]: https://fsfe.org
  [3]: https://fsfe.org/about/kirschner/
  [4]: https://fsfe.org/about/albers/
- [5]: http://cityhotel-oberhausen.de/
+ [5]: https://web.archive.org/web/20170603144203/https://cityhotel-oberhausen.de/
  [6]: http://programm.openrheinruhr.de/2016/events/445.de.html
  [7]: http://programm.openrheinruhr.de/2016/events/494.de.html
  [8]: http://programm.openrheinruhr.de/2016/events/496.de.html

content/blog/2020-03-system-hackers-report-lyon.md

@@ -35,7 +35,7 @@ so Albert, Florian, Francesco, Thomas, Vincent and me tackled large and
 small challenges in the FSFE's systems. But we have also used the time
 to exchange knowledge about complex tasks and some interconnected
 systems. The official part was conducted in the fascinating [Astech
-Fablab](https://astech-fablab.fr), but word has it that
+Fablab](https://web.archive.org/web/20200814122815/http://astech-fablab.fr/), but word has it that
 [Ninkasi](https://www.ninkasi.fr/), an excellent pub in Lyon, was the
 actual epicentre of this year's meeting.
 

data/links.yml

@@ -13,7 +13,7 @@
   type: media
   date: 2024-09
   links:
-    - href: https://www.dbsystel.de/dbsystel-en/about-us/Digital-Stories-en/why-dbsystel-relies-on-opensource-13072158
+    - href: https://www.dbsystel.de/dbsystel-en/Digital-Stories-en/why-dbsystel-relies-on-opensource-13072158
       text: "Digital Story @ DB Systel"
   lang: ["EN"]
   tags: ["OSPO", "Community", "OpenRail"]
@@ -336,7 +336,7 @@
   type: av
   date: 2020-04
   links:
-    - href: https://librezoom.net/lz20-paradox/
+    - href: http://web.archive.org/web/20230603153954/https://librezoom.net/lz20-paradox/
       text: Podcast Interview @ Librezoom
   audio: https://up.mehl.mx/audio/20200401-librezoom-itsec.mp3
   lang: ["DE"]