http://www.theregister.co.uk/2004/11/25/nmap_draws_fbi_subpoenas/
[quote]
In a telephone interview, Fyodor said the disclaimer wasn't prompted by any particular incident, and that he'd received "less than half-a-dozen" subpoenas this year. "It's not a huge number, but I hadn't received any before 2004, and so it's a striking new issue," he said.
[/quote]
-- Robin Laing
