File:Hannes Hauswedell giving a session about secure mobile messengers during 33C3.jpg

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English: Hannes Hauswedell giving a session about "What makes a secure mobile messenger?" during the 33rd edition of the Chaos Communication Conference, "33C3", in the Congress Center Hamburg
Source Own work
Author Erik Albers
Camera location53° 33′ 43.59″ N, 9° 59′ 09.95″ E Kartographer map based on OpenStreetMap.View all coordinates using: OpenStreetMap - Google Earthinfo


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