Some interesting background. In the 1990s Assange invented a kind of encryption called deniable encryption. This is encryption with two passwords: if you are captured and coerced to reveal the password (so-called rubber-hose cryptanalysis) you reveal a false one, which unlocks dummy content. The real content is still hidden. This may be why the Insurance file is so large. It may have layers of dummy content.
Another interesting rumour is that Assange was on the run as a child from an Australian cult called The Family or the White Brotherhood, which held children incommunicado, dyed their hair white, and dosed them with LSD. This group seems to have really existed. I don't think there's any indication he was caught by them though, just hiding from them.
It will be interesting to see what happens next.