[brute]

For TC we have this story: http://wroot.org/posts/daniel-dantas-hard-drive-encryption-w...

And for MS there is this story: http://www.geekwire.com/2013/report-microsoft-nsa/

This is of course no evidence for the (in)security of TC/Bitlocker, but I would call it indirect evidence, and certainly more than 'blind faith'.