In May 2004, 's Santa Clara data-center prefix was hijacked by DataOne, a Malaysian ISP. http://www.web-malaysia.com/?page_id=18 Network security experts say the incident was malicious, with DataOne intentionally trying to block traffic from Yahoo http://www.renesys.com/tech/notes/WP_BGP_rev6.pdf The Yahoo attack involved the hijacking of two of its in-use prefixes.

Northrop Grumman hit by spammers

In May 2003, a group of spammers hijacked an unused block of IP address space owned by and began sending out massive amounts of unwanted e-mail messages. It took two months for the military contractor to reclaim ownership of its IP addresses and get the rogue routing announcements blocked across the Internet. In the meantime, Northrop Grumman's IP addresses ended up on high-profile spam . 

Turkish ISP takes over the Internet

On Dec. 24, 2004, sent out a full table of Internet routes via BGP that routed most Internet traffic through Turkey for several hours that morning. TTNet's routing information claimed that the carrier was the best route to everything on the Internet, according to BGP experts . The mistake resulted in shifting all traffic from sites such as Amazon, Microsoft, Yahoo and CNN to TTNet.