Attack Case Study1

Twitter, Facebook, Google and LiveJournal under attack Technology guardian.co.uk: "Google the latest victim of malicious online attacksMillions of users affected as Twitter, Facebook, LiveJournal and Google are attackedComments (48)
Buzz up!
Digg it
Bobbie Johnson, technology correspondent guardian.co.uk, Thursday 6 August 2009 22.26 BST Article historyA concerted attempt to crash a string of major websites appears to be underway, with malicious online attacks affecting services including Facebook, Twitter and Google.
The source of the strikes is not yet known, but they have already affected hundreds of millions of web users around the world.
Initial reports earlier today confirmed that Twitter had been affected by a denial of service attack, where vast numbers of computers are simultaneously pointed at a victim's website in order to overwhelm its servers.
But after reports that Facebook was suffering from unexpected problems, it has emerged that several major companies were also victims of a simultaneous attack, including some Google sites and the blogging service LiveJournal.
A Google spokesman said that the company's systems helped protect it from damage, and that neither Google.com nor Gmail suffered any impact: 'We are in contact with some affected companies to help investigate this attack.'"