A software problem that blocked all ship traffic in the main channel between the Baltic and the North Sea on Sunday was not a hacker attack and has been fixed, a spokesperson for Germany's Kiel Canal Waterways and Shipping Authority said on Monday.
The incident was caused by the installation of a new vessel traffic management software system, the spokesperson said.
Fixing a small error in the code allowed the channel to go back into full operation after more than 12 hours of outage, the spokesperson added.