 "Signal, messaging apps")
Signal and Telegram, two private messenger apps, saw downloads and user sign-ups soar during the extended downtime of Facebook Inc.’s network of apps and services.
Millions of new users joined the Edward Snowden-endorsed Signal on Monday, it said on Twitter. Telegram, whose functionality closely mirrors that of WhatsApp, surged 55 places to top the U.S. iPhone download chart, according to Sensor Tower.
Facebook suffered a six-hour outage that spanned its WhatsApp messenger, the main social network and photo-sharing app Instagram, shutting out many of its 2.7 billion global users. The situation idled some of the company’s employees and prompted a public
