(Image credit: Canonical) Canonical, the company behind Ubuntu, has confirmed that services are back up and running following a major DDoS attack that left some of its infrastructure, including websites and repos, unavailable for five days. DDoS, or Distributed Denial of Service, attacks are intended to disrupt the everyday operation of servers and networks. They're often quite effective, too, leveraging a flood of requests from IP addresses that are tough to distinguish from genuine ones, with the intention of overwhelming a system. That's what Canonical has been dealing with over the past five days, only recently confirming that it has restored services. Though some services may still be affected as they spin back up: "You may experience partially degraded performance on some of the services as we continue to work diligently on resolving the situation." Canonical's status page now notes all components as operational.…