alt Hacker NewsSo apparently some CCC-connected hackers already unmasked one of them years ago (as reported in the update, which could have also just linked to the talk here: https://media.ccc.de/v/37c3-12134-hirne_hacken_hackback_edit... )
Makes you wonder if the investigators discovered this independently, or decided to maybe ask the hackers already involved in defending against them for help...
I'm not deep into the topic, but AFAIK there generally isn't a warm connection between the CCC and the BND in Germany (in the recent years mostly due to the BNDs involvement ins spying on German citizens, but I think there is also deeper history there). If a hacker collaborates with the BND they do run a risk of many of their peers not wanting to collaborate with them anymore.