Facebook and its other services are back online following a mass outage on October 4 that lasted several hours.
According to Downdetector, a real-time website monitoring service, over 10.6 million problem reports for Facebook were recorded worldwide on October 4. Facebook-owned services Instagram and WhatsApp were also offline, making it one of the the largest outages the company has experienced.
Facebook shares fell around 4.9 percent on Monday, wiping over $40 billion off the value of the company.
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