AP Photos/Susan WalshErik Prince’s plan to send a private military force to Afghanistan may not have worked out, but another venture he’s involved with has sunnier prospects: a secure communications solution for journalists, human rights workers, and even the Democratic Party. Wickr, the American software company best-known for its free secure messaging app, is developing a suite of different secure communications apps, including one that is being used by the Democratic Party. Less well-known is that one of the principal investors is Erik Prince, the founder of the controversial private security firm Blackwater (now Academi), according to a confidential briefing obtained by Foreign Policy. Prince’s investment in Wickr is by no means secret, but it is obscure.