Facebook, Instagram, WhatsApp and Facebook Messenger went down for users around the world for nearly six hours today.
According to DownDetector, the issues started at around 16:44 BST (11:44 ET), with nearly 80,000 reports for WhatsApp and more than 50,000 for Facebook.
NetBlocks, which tracks internet outages and their impact, estimate the outage cost the global economy $160m (£117 million), and sent the Facebook share price down by more than five per cent.
The exact cause of the outage has