“Yesterday, we made a server configuration change that triggered a cascading series of issues. As a result, many people had difficulty accessing our apps and services,” a Facebook spokesperson said Thursday.
A Facebook spokesperson told CNN Business that despite some online rumors, the issue was not caused by a hack or an attack, adding that the company was focused on resolving the issue and hoped to eventually share details about what caused the problem.
The interruption, which also extended to Facebook-owned services like Instagram, Messenger and WhatsApp, is believed to be the biggest ever suffered by the social media giant.
In Washington, campaigners who have long called for the break-up of Facebook said the outage showed how the concentration of ownership of tech platforms is “dangerous” for consumers.