This is one of the best videos I have seen this (two month old) year. Here is the description from the video:
“This video shows actual attacker sessions and intrusion activities conducted by one specific Advanced Persistent Threat (APT) group, which Mandiant has named APT1. This group has systematically stolen confidential data from at least 141 organizations across multiple industries.”
A full report, published by Mandiant, details APT1′s multi-year cyber espionage campaign and is available here.