Kloak allows you to privately (post a status,) photos and location with
all your friends or colleagues. The Kloak application and its online
service is protected from the usual social networking data-mining via
end-to-end encryption. Data shared with your group is never shared with anyone else. Kloak is brought (to) you by SpiderOak, a privacy company known for (SpiderOakONE) encrypted cloud backup.
Kloak is built with the Crypton framework: https://crypton.io
To learn more, visit: spideroak.com/solutions/kloak