Houses of worship remain a vulnerable target for attacks and foreign entities could be looking to "sow discord" using the internet, an FBI official warned at a security event with law enforcement officials and faith leaders this week.

The official, who spoke on the condition of anonymity, urged faith leaders to have a share information with U.S. authorities and to have a "strategic perspective" in thinking about security.

"You need to be thinking about this for the next six months. You need to be thinking about this for the next year. What are the consequences of going to conflict with Iran and Hezbollah, those actors of interest here," the official said.

"You need to be thinking about that right now," the official said.

The briefing covered a broad range of topics including best practices on how to keep houses of worship safe in an ever-present threat environment.

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