In his later years, the writer David Halberstam was no one’s idea of a security risk. But it wasn’t so early on: News broke yesterday that the FBI kept a dossier on the Halberstam from the 1960s up until the late 1980s. Halberstam apparently came to the bureau’s attention because of a 1965 letter—now heavily redacted—that cast suspicions on his activities. Halberstam was covering Poland for The New York Times, and had married a Polish actress. The FBI later determined there was “no derogatory information” on Halberstam, and suggested the letter might be the work of an enemy.