Conversation so far:
who was the anthrax hoax victim?
On October 12, 2001, Judith Miller opened an anthrax hoax letter mailed to her New York Times office.
then what happened?
Judith Miller's book became a top New York Times best seller shortly after she became a victim of a hoax anthrax letter.
what more is known about the attack
The 2001 anthrax attacks had begun occurring in the wake of the September 11 attacks in 2001, with anthrax-laced letters sent to multiple news agencies.
did these attacks result in any serious mishap?
Twenty-two people were infected; five died.
any interesting information in this section?
In 2008, the government's investigation of these mailings focused on Bruce Ivins.

Question: what was the result of this investigation?
Self-contained rewrite: what was the result of this investigation?