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Guardian UK: Revealed: Facebook exposed identities of moderators to suspected terrorists - A security lapse that affected more than 1,000 workers forced one moderator into hiding – and he still lives in constant fear for his safety

Of the 1,000 affected workers, around 40 worked in a counter-terrorism unit based at Facebook’s European headquarters in Dublin, Ireland. Six of those were assessed to be “high priority” victims of the mistake after Facebook concluded their personal profiles were likely viewed by potential terrorists.