I just have experience working in 3 different labs in Germany and I can tell you: secrecy is the holy grail and just using privat repos (for code not data) on g

I just have experience working in 3 different labs in Germany and I can tell you: secrecy is the holy grail and just using privat repos (for code not data) on github/sourcefore is forbidden. But this is perhaps just small sample size and a german habit ;)