Complexity of the Windows 8 makes it vulnerable to attack...
"April 29, 2013 IDG News Service The complexity of the Windows 8 operating system has increased its vulnerability, according to Kaspersky Lab A/NZ product specialist, Wayne Kirby.":
The problem is, they started migrating Skydrive into 7 before 8 even got released. Kaspersky is just trying to start a flame war, and spreading FUD, to get people to purchase their products.