Everyone’s worried aboutMark Zuckerberg controlling the next currency, but I’m more concerned about a crypto Cambridge Analytica.

Today Facebook announced Libra, its forthcoming stablecoindesigned to let you shop and send money overseas with almost zero transaction fees. Immediately, critics started harping about the dangers of centralizing control of tomorrow’s money in the hands of a company with a poor track record of privacy and security.

Facebook anticipated this, though, and created a subsidiary called Calibra to run its crypto dealings and keep all transaction data separate from your social data. Facebook shares control of Libra with 27 other Libra Association founding members, and as many as 100 total when the token launches in the first half of 2020. Each member gets just one vote on the Libra council, so Facebook can’t hijack the token’s governance even though it invented it.

With privacy fears and centralized control issues at least somewhat addressed, there’s always the issue of security. Facebook naturally has a huge target on its back for hackers. Not just because Libra could hold so much value to steal, but because plenty of trolls would get off on screwing up Facebook’s currency. That’s why Facebook open-sourced the Libra Blockchain and is offering a prototype in a pre-launch testnet. This developer beta plus a bug bounty program run in partnership with HackerOne is meant to surface all the flaws and vulnerabilities before Libra goes live with real money connected.

Yet that leaves one giant vector for abuse of Libra: the developer platform.

“Essential to the spirit of Libra . . . the Libra Blockchain will be open to everyone: any consumer, developer, or business can use the Libra network, build products on top of it, and add value through their services. Open access ensures low barriers to entry and innovation and encourages healthy competition that benefits consumers,” Facebook explained in its white paper and Libra launch documents. It’s even building a whole coding language called Move for making Libra apps.

Apparently Facebook has already forgotten how allowing anyone to build on the Facebook app platform and its low barriers to “innovation” are e