How reassuring, not (part 2)

This Blaze article http://www.theblaze.com/stories/2016/04/11/german-intelligence-chief-makes-surprising-admission-analysts-didnt-expect-terrorists-to-sneak-into-europe-with-migrants/ has a second, maybe even scarier revelation:

'The intelligence chief made another surprising admission – that some 70 percent of refugees entering Germany did not arrive with a valid passport and have been registered based solely on the information they provided.

"I am concerned that we (the BfV) and our partner agencies may, in fact, have information about dangerous individuals saved in our databases. However, we might fail to notice that they are here because they enter with false identities," he said.'

Are we collectively insane?