The NYPD officer who was killed Monday in a Midtown mass shooting was earning extra pay in what is generally thought of as a low-stress assignment: working security, in uniform, for a private company.
For Didarul Islam, the once cushy side job turned deadly when a gunman entered the Park Avenue building at about 6:30 p.m., killing him, three others, and finally himself. The gunman shot a sixth person who remains in critical condition.
Paid detail work by off-duty police officers could become more common and more dangerous as threats against corporate executives increase and security shortfalls at office buildings become more apparent, security experts say…