Security pros concerned about Facebook payment expansion

Facebook's Messenger app has allowed users to send money to friends using their debit cards since last spring, but recent reports indicate that Facebook may be considering a move into the retail payments space as well, following in the tracks of Apple, Samsung and Google. Facebook will need to be careful, however, not to simply become yet another channel for criminals, security experts say.
For many users, logging into Facebook is not a major security issue - after all, it's a fun social platfo