Russia's state communications regulator says it has blocked IP addresses owned by Google and Amazon, saying they were being used by the Telegram messaging service which Moscow moved to ban this week.
Telegram - News, Features, and Slideshows
Telegram, a messaging application that markets itself as a secure communication tool, doesn't handle encrypted conversations securely, according to the founder of a mobile security company.
Messaging programs are a closely watched application category, with experts scrutinizing how communications are protected from government surveillance dragnets and hackers. The primary defense invariably involves encryption, but just saying an application uses encryption by no means ensures it's secure.