A law firm on Monday filed another lawsuit against Facebook for failing to protect consumer data.  The suit...was filed in the US District Court for the Northern District of California in San Jose.  It accuses Facebook of "unjust enrichment and violation of privacy and consumer-protection laws when it permitted app developers and other third parties to exploit its 'lax to non-existent enforcement practices,'" according to a press release from law firm Hagens Berman...The suit asks for damages to be awarded to the plaintiffs, as well as injunctive relief "to ensure that Facebook's users are not injured by similar shenanigans again."  It wants class action status...