NEW YORK – One autumn morning in Buffalo, N.Y., a college student named Adeela Khan logged into her email and found a message announcing an upcoming Islamic conference in Toronto.

Khan clicked "forward," sent it to a group of fellow Muslims at the University at Buffalo, and promptly forgot about it.

But that simple act on Nov. 9, 2006, was enough to arouse the suspicion of an intelligence analyst at the New York Police Department, 300 miles away, who combed through her post and put her name in an official report. Marked "SECRET" in large red letters, the document went all the way to Commissioner Raymond Kelly's office.