> Der Chaos Computer Club möchte daher die schönsten im Jahr 2015 gegen Journalisten oder ihre Quellen eingeleiteten Ermittlungsverfahren wegen Landes- oder Hochverrats mit jeweils einem Freiticket zum nächsten Chaos Communication Congress (32C3) prämieren.
The meaning is a bit complicated.
The Chaos Computer wants to reward people, who have caused such investigations, with a free ticket for the next congress. Basically they want to reward whistleblowers and related.
I'd translate this as: "The Chaos Computer Club therefore wants to reward the best investigations initiated in 2015 against journalists ..."