You were called upon to investigate some strange behavior on Company XYZ networks. Some users have complained that at times the network performance seemed slow, light indicators on the switches…

You were called upon to investigate some strange behavior on Company XYZ networks. Some users have complained that at times the network performance seemed slow, light indicators on the switches showed a large amount of traffic, and one of the senior administrators had noticed some strange traffic pattern (see graphic below). What type of attack has this network been a victim of?