The social media giant keeps a routinely updated list of people that members of its security team should 'be on lookout' for due to threatening statements.
Facebook gathers intelligence from its platform to identify people who threaten the firm or its workers, the social network said in response to media reports of the security tactic.
CNBC reported that it interviewed more than a dozen former Facebook security employees, some of whom questioned the ethics of what was portrayed as an unclearly defined practice at the leading social network.
