SummaryCompaniesCollins Aerospace works to restore systems at key airportsBerlin Marathon worsens delays; Brussels uses manual check-insAttacks more visible, not necessarily more frequent -analystBERLIN, Sept 22 (Reuters) - Airport disruptions that affected automated check-in systems in recent days were caused by a ransomware attack, the EU's cybersecurity agency said on Monday, highlighting the growing risks of such attacks to critical infrastructure and industries.Several of Europe's biggest a...