It's probably illegal for folks to say. See
http://www4.law.cornell.edu/uscode/18/2511.html, section (2)(a)(ii)(B),
if it's an ordinary criminal warrant, and section (b)(2)(C) of
http://www4.law.cornell.edu/uscode/50/1805.html for wiretaps
under the Foreign Intelligence Surveillance Act. (Btw, both acts
*require* the government to pay.)
--Steve Bellovin, http://www.research.att.com/~smb
http://www.wilyhacker.com