COLOGNE, Germany — Military cyber response teams from 18 European nations went through a live-fire exercise this week designed to test the bloc’s ability to bundle its forces in the event of a cyberattack.
The event, organized by the European Defence Agency, is the opening salvo in a campaign that will stretch through the summer and include training sessions and conferences. The idea is to enhance cooperation in a field that, compared with the civilian world, is still loath to share sensitive threat data and tactics across borders.
