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.
