In more technology news, WhatsApp urged its 1.5 billion users to update their apps after it was revealed hackers found a way to remotely install surveillance software on smartphones and other personal devices via the popular messaging app. The attack was reportedly orchestrated by Israeli security firm NSO Group. NSO has been implicated in surveillance efforts on behalf of the Saudi and Mexican governments. The Committee to Protect Journalists warned that journalists, lawyers, activists and human rights defenders were the most likely targets of the attack. WhatsApp is owned by Facebook.