document: Malicious attack hits a million Web pages SEATTLE : More than one million website pages have been hit by a sophisticated hacking attack that injects code into sites that redirect users to a fraudulent software sales operation . The so-called '' `` mass-injection '' '' attack , which experts say is the largest of its kind ever seen , has managed to insert malicious code into websites by gaining access to the servers running the databases behind the Internet , according to the technology security company that discovered it . Websense , which first found evidence of the attack earlier this week , has called it '' `` LizaMoon , '' '' after the site to which the malicious code first directed its researchers . Users can see that they are being redirected when they attempt to visit an infected address , and can close the window with no ill effects , said Patrik Runald , a senior manager of security research at Websense . The attack has largely affected small websites so far , he said , with no evidence that popular corporate or government websites have been compromised . If users do not close the window after typing an infected address , or clicking an infected link , they are redirected to a page showing a warning from '' `` Windows Stability Center '' '' - posing as a Microsoft Corp security product - that there are problems with their computer and they are urged to pay for software to fix it . Websense said the site appeared to be set up by sophisticated fraudsters out to make money , but it was not clear whether the site also planted malicious software on users ' computers if they made a purchase on the site , or if the operation was linked to an identity theft scam . The presentation of the bogus website , as shown by Websense , is high quality but clearly fraudulent . Microsoft has no product called '' `` Windows Stability Center '' '' . The company did not immediately have a comment on the attack . Websense said some third-party Web addresses containing information about podcasts available on Apple Inc 's iTunes service had been compromised , but said Apple appeared to have prevented the malicious links from working . Apple did not respond to a request for comment . The attack may take some time to be tamed , warned Runald , as researchers first have to identify the software being compromised , and then website operators have to install updated software . '' `` Attacks like this tend to stay for a very long time , '' '' he said . '' `` Once they are onto something , it tends to stay with us . This LizaMoon event wo n't disappear over a day . '' ''
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