Let me try to summarize, it's indeed a little complex: There is no direct connection. Protelion was member of the CSRD. Schönbohm's friend Dünn (also a founding member and still head of the CSRD) had contact to russia. While Schönbohm left the CSRD and became head of the BSI, he still had contact with the CSRD, he was even advertising it. The problem is, that Protelion offers security software for huge companies for critical infrastructures - allegdly "Made in Germany". And while the BSI issued a warning for Kasperski, after Russia invade Ukraine, this did not happen for Protelion (though the refused a certification request from Protelion, knowing the connection to Russia).
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Let me try to summarize, it's indeed a little complex: There is no direct connection. Protelion was member of the CSRD. Schönbohm's friend Dünn (also a founding member and still head of the CSRD) had contact to russia. While Schönbohm left the CSRD and became head of the BSI, he still had contact with the CSRD, he was even advertising it. The problem is, that Protelion offers security software for huge companies for critical infrastructures - allegdly "Made in Germany". And while the BSI issued a warning for Kasperski, after Russia invade Ukraine, this did not happen for Protelion (though the refused a certification request from Protelion, knowing the connection to Russia).