MOSCOW, October 5. /TASS/. Facebook is back online and claims that no data leaks of users have been recorded amid a major disruption in its activities on Monday.

"Our services are now back online and we’re actively working to fully return them to regular operations. We want to make clear at this time we believe the root cause of this outage was a faulty configuration change. We also have no evidence that user data was compromised as a result of this downtime," the company said in a statement.

Facebook shared a reason for the disruption. "Our engineering teams have learned that configuration changes on the backbone routers that coordinate network traffic between our data centers caused issues that interrupted this communication. This disruption to network traffic had a cascading effect on the way our data centers communicate, bringing our services to a halt," the company said.

On Monday, users around the world reported a massive disruption in the activities of Facebook, Instagram, and WhatsApp. Facebook, which owns these social networks and the messenger, confirmed information about the problems and assured that they are working to fix them. The global outage lasted more than 6,5 hours.