Facebook explained that its older systems f '' did not always delete images '' The problem was ` ` issues with our content delivery network ( CDN ) . '' Frederic Wolens explained that photos taken online are stuck in a legacy system .
Facebook admitted that its older systems f '' did not always delete images '' The company was `` working with our content delivery network ( CDN ) partner '' Frederic Wolens explained that photos remaining online are stuck in a legacy system .