Antivirus experts have found an odd virus that attacks Delphi library units to get compiled into your programs. The W32/Induc-A virus doesn't affect executable files, but looks for a Delphi installation (apparently versions 5, 6 and 7), modifies SysConst.pas (backing up the original) and gets compiled by Delphi into your own programs, to keep spreading.
Read the rest of article in Marco Cantu's blog: http://blog.marcocantu.com/blog/virus_a ... elphi.html