CONFIRM THIS UPGRADE? SKIP THIS STEP

“This morning, we temporarily took down the Facebook site to fix a bug we identified earlier today…. The result [of the bug] was that an isolated group of users could see some pages that were not intended for them.”

Facebook spokesprofile Brandee Barker, explaining why what her company’s website described as an “upgrade” was in fact, debugging an error that allowed people to see users’ private data, The New York Times, 31 July 2007