Ditto. "This server could not prove that it is events.ccc.de; its security certificate expired 42 days ago. This may be caused by a misconfiguration or an atta

Ditto. "This server could not prove that it is events.ccc.de; its security certificate expired 42 days ago. This may be caused by a misconfiguration or an attacker intercepting your connection. Your computer's clock is currently set to Monday, December 25, 2017. Does that look right? If not, you should correct your system's clock and then refresh this page"