quote:

It is billed as an easy and secure way to chat by video or text message with friends and family, even in a country that has restricted popular messaging services like WhatsApp and Skype.

But the service, ToTok, is actually a spying tool, according to American officials familiar with a classified intelligence assessment and a New York Times investigation into the app and its developers. It is used by the government of the United Arab Emirates to try to track every conversation, movement, relationship, appointment, sound and image of those who install it on their phones.

ToTok, introduced only months ago, was downloaded millions of times from the Apple and Google app stores by users throughout the Middle East, Europe, Asia, Africa and North America. While the majority of its users are in the Emirates, ToTok surged to become one of the most downloaded social apps in the United States last week, according to app rankings and App Annie, a research firm.

ToTok amounts to the latest escalation in a digital arms race among wealthy authoritarian governments, interviews with current and former American foreign officials and a forensic investigation showed. The governments are pursuing more effective and convenient methods to spy on foreign adversaries, criminal and terrorist networks, journalists and critics — efforts that have ensnared people all over the world in their surveillance nets.