Why is New York State increasing counter-terror measures? What do they know that we don't?

via governor.ny.gov

Governor Andrew M. Cuomo today met with Legislative Leaders to announce a coordinated increase in security and law enforcement personnel at mass transit sites in the New York City region. This announcement is being made out of an abundance of caution, given the undeniable increase of terrorist activity abroad. 

Wait.  This is bullshit.  We've seen an "increase in terrorist activity abroad" for over a decade.  Additionally, while ISIS has made threats they have been busy dealing with their latest conquests.

So what suddenly happened that made the governor of New York increase security?

Read the entire press release here, but this thing has the smell of increased terrorist chatter that identified New York as a target and officials are attempting to do a quiet hardening.