Cyveillance is a spybot that scours the web for copyright violations and “damaging information” on behalf of clients such as the RIAA and MPAA. Their robot spoofs its User-Agent to look like Internet Explorer, and it completely ignores robots.txt. I have banned it by IP address.

# Blocking Cyveillance
RewriteCond %{REMOTE_ADDR} "^63\.148\.99\.2(2[4-9]¦[3-4][0-9]¦5[0-5])$"
RewriteRule .* - [F]