(CNN) A group calling itself the Islamic State Hacking Division this week posted online a purported list of names and contacts for Americans it refers to as “targets,” according to officials.

Though the legitimacy of the list is questionable, and much of the information it contains is outdated, the message claims to provide the phone numbers, locations, and “passwords” for 1400 American government and military personnel as well as purported credit card numbers, and excerpts of some Facebook chats.

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