Looking again at the post, I think the author was in fact rather careful to not give away anything about security practices at Dropbox when he was there, for obvious reasons.
He keeps many comments at a high level (security/convenience) and refers to a few non-Dropbox examples.
Comments
I'm glad he put the security notes in. It is so hard to get true facts about how things are actually done.
Looking again at the post, I think the author was in fact rather careful to not give away anything about security practices at Dropbox when he was there, for obvious reasons.
He keeps many comments at a high level (security/convenience) and refers to a few non-Dropbox examples.