Why did Excalibur break?

Can you explain why the renowned cryptocurrency platform, Excalibur, suddenly broke down? Were there any underlying technical issues that had been overlooked? Did the recent surge in user activity put too much strain on the system? Did hackers manage to infiltrate the network, causing the breakdown? Or was it simply a case of poor maintenance and oversight? We need answers to understand what went wrong and how to prevent such a catastrophic failure from happening again in the future.