Many antivirus programs are still susceptible to this evasion technique:
Original post: http://blog.didierstevens.com/2007/10/23/a000n0000-0000o000l00d00-0i000e000-00t0r0000i0000c000k/
News article: http://www.vnunet.com/vnunet/news/2202468/hackers-wreak-havoc-zero-byte