Mohammad Omar Aly Hassan and nine others were indicted in a federal district court on charges of conspiring to advance violent jihad (holy war against enemies of Islam) and other offenses related to terrorism. The evidence at Hassan's trial included postings he made on Facebook concerning his adherence to violent jihadist ideology. Convicted, Hassan appealed, contending that the Facebook items had not been properly authenticated (established as his own comments). How might the government show the connection between postings on Facebook and those who post them? Discuss.