Defacement of web-sites

Name(s): 
Website vandalism
Incidence 
1999 saw many high profile web sites defaced. Among them: C-Span (www.c-span.org), EBay (www.ebay.com), ABC News (www.abc.com), Symantec (www.symantec.com), The White House (www.whitehouse.gov), The Senate (www.senate.gov), GreenPeace (www.greenpeace.org), US Information Agency (www.usia.gov), MacWeek (www.macweek.com), HotBot (www.hotbot.com), Wired (www.wired.com), and more. Among the US armed forces, all branches including the Coast Guard experienced at least one defacement.
Type 
(F) Fuzzy exceptional problems