In his confession, KSM claims:

"I was responsible for planning, training, surveying, and financing for the New (or Second) Wave of attacks against the following skyscrapers after 9/11: ...Plaza Bank, Washington state"

The Plaza Bank was not founded until 2006 according to their official Web site:

" Founded in early 2006, with a vision of creating the leading commercial bank in the Pacific Northwest, Plaza Bank’s story quickly captured the hearts and passion of some of the region’s leading business minds. From Jack Creighton, former CEO of Weyerhaeuser and United Airlines, to former Seattle Mariner Edgar Martinez, and nationally acclaimed salon operator Gene Juárez, the story of a bank founded to bring “class to the mass” simply could not be contained."

I think we can say for quite certain that whomever is being held as KSM was either caught recently or that his entire confession is a fraud.