FBI Warning

FBI Warning--

Washington (CNN) -- The FBI issued a warning Sunday to members of the U.S.
military that ISIS is calling for attacks against them, according to a law
enforcement source, saying that "overseas based individuals are looking for
like-minded individuals in the U.S. to carry out these attacks."

"We also request members of the military review their online social media
presence for any information that might attract the attention of violent
extremists," the bulletin said, advising that members of the military "use
caution and practice operational security when posting."

The new FBI bulletin includes a concern that ISIS members are "spotting and
assessing" individuals in the U.S. who they believe may be interested in
carrying out attacks on U.S. soil against members of the U.S. military, a
U.S. counter-terror official tells CNN.

The bulletin language warns of "individuals overseas spotting and assessing"
individuals in the U.S., based on their social media postings in support of
the group. The warning encourages members of the military to "exercise
operational security" in response to such threats, including reviewing their
online social media postings so as not to make themselves easier targets.

U.S. law enforcement posted the warning now in advance of the upcoming
holiday season when many members of the U.S. military travel in uniform. The
new warning also cites several recent attacks in Canada against members of
the Canadian military, including the Oct. 22 Ottawa shooting and two other
attacks using cars.

The concern in the FBI and intelligence community is that ISIS members
overseas are tracking personal information about "specific" U.S. soldiers
--- such as their addresses and even their relatives addresses -- based on
their social media posts, according to a law enforcement official briefed on
the matter.