DDoS is a total guess. It does seem unresponsive, but I wouldn't jump to terrorism given no more information. Most mirrors work, so you should be able recover

DDoS is a total guess. It does seem unresponsive, but I wouldn't jump to terrorism given no more information. Most mirrors work, so you should be able recover by updating your `sources.list`. Of course this is a huge pain if you have many machines without centralized configuration management, or if you have tenants with virtual machines.