Facebook's answer to Bitcoin poses a double threat

While no one forecast an immediate rebound in crypto prices

Regulators will be watching closely when Facebook Inc unveils its cryptocurrency project this week. Their vigilance is warranted.

Mark Zuckerberg, the social network’s founder, isn’t going to gamble with what remains of his public image by replicating the worst excesses of the Bitcoin craze. He’s not trying to create a speculative currency; a potential wave of mom-and-pop investment losses is the last thing he needs. He just wants a digital medium of exchange.