“White Supremacist dating platform hacked and deleted - live on stage Chaos Communication Congress” (Reddit)
https://www.reddit.com/r/chaoticgood/comments/1pzu0ei/white_supremacist_dating_platform_hacked_and/
Data analysis https://okstupid.lol/
Full talk (download for English)
https://media.ccc.de/v/39c3-the-heartbreak-machine-nazis-in-the-echo-chamber