Article Photos: Bug exposes contacts of some on Facebook 1/1

FILE - In this Friday, March 15, 2013 file photo, a Facebook employee walks past a sign at Facebook headquarters in Menlo Park, Calif. Facebook on Friday, June 21, 2013 said a bug in its system caused 6 million users' contact information to be inadvertently exposed. (AP Photo/Jeff Chiu, File) ORG XMIT: NY119