... susceptibility of the Internet to random faults, malicious attacks, and mixtures of faults andattacks. We analyze actual Internet data, as well as simulated datacreated with network models. The network ... 3 are the average of the ten runs. We define the averagediameter ratio asdf/dowhere dodenotes the average diameter of the initial network, anddfis the average diameter after 10% of the ... that the Internet is much more vulnerable under a small fraction of attacks than the BA model—even 1% of attacks decreaseconnectivity dramatically. In dynamic analysis, we trace the changes of...