If you want to get in contact with me, use whatever works best for you:

eMail: homepage@nafn.de (gpg)
Threema: VKS8SFWD
Mastodon: @malte@frankfurt.social

You can find me on the following websites:

github.com: maltekrupa
exercism.org: computerfoo
stackexchange.com: malte
chess.com: comfoo