Text messages got a lot more private. In April, the worlds most popular messaging service, WhatsApp, announced it would use end-to-end encryption by default for all users, making it virtually impossible for anyone to intercept private WhatsApp conversations, even if they work at Facebook, which owns WhatsApp, or at the worlds most powerful electronic spying agency, the NSA. Then in May, tech giant Google announced a brand new messaging app called Allo that also supports end-to-end encryption.