The European Union is hosting what it describes as its biggest cybersecurity exercise.
Governments, businesses and ISPs (internet service providers) are being faced with 1,200 separate incidents during a simulated DDoS (distributed denial of service) attack.
A similar event was staged in 2010, but this is the first time that the bloc’s banks have been involved.
The results will be used to find ways to improve co-operation.
However, one computer security expert warned that the effort would be of only limited use when it came to protecting organisations against real-world attacks.
Source: BBC News