“Top police officials from New York, London and elsewhere met Thursday to share strategies for combating the homegrown terror threat posed by self-radicalized people who are difficult to thwart because they keep to themselves.
‘If the conspiracy to commit a terrorist act is a conspiracy of one, and the planning for that is unsophisticated, doesn’t require a lot pre-operational surveillance and is only happening in the mind of the offender, from an intelligence standpoint, from a prevention standpoint, that’s very hard to detect,’ John Miller, head of counterterrorism for the New York Police Department, said following the conference at NYPD headquarters in Manhattan.”
Source:Lone-Wolf Terror Threat Focus of NYPD Conference – NYTimes.com