As long as they are in the US, or a nation that bends to our will, it is not a secure provider.

It's been little over a year since the FBI seized their servers. https://www.eff.org/deeplinks/2012/04/may-firstriseup-server...

edit: I also believe they were complicit in ousting several of their users who allegedly used their service for illicit reasons a while back when they were competing with hushmail, safemail, and the lot. This is from memory, and I have no proof to back it up. Grain of salt and all that