Facebook shares rose 1.08% in premarket trading

Facebook shares rose 1.08% in premarket trading.

Facebook Inc. blamed a global service outage that kept its social media apps offline for much of Monday on a problem with its network configuration, adding that it found no evidence that user data was compromised during the downtime.

"We want to make clear at this time we believe the root cause of this outage was a faulty configuration change," Facebook said in the blog.

The Facebook outage is the largest ever tracked by web monitoring group Downdetector.