First page Back Continue Last page Summary Graphic
Examples: denial of services
1990: US 800 service down (4 hours)
1991: Major cities lose phones (8 hours)
1992: Survey shows US losses at $4 billion
1993: Email overload attacks 80% effective
1994: Rolling blackouts shut down US
1995: Comp-U-Serve loses 40,000 Emails
1996: Western states power blackout by cascade failure
1997: Network protocol attacks widely exploited for denial
1998: Ping of death and UDP viruses used in widespread attacks
1999: IW attacks during Bosnian Conflict
Notes: