The Australian released an article today stating the FBI warns around 50 of the Fortune 500 companies are among thousands of individual and company’s still infected by an internet virus that could see tens of thousands lose their internet service on Monday. Read the full article at http://www.theaustralian.com.au/australian-it/fortune-500-companies-and-individuals-face-virus-d-day-on-monday-says-fbi/story-e6frgakx-1226418488512
The malicious software (malware) is called DNS Changer. It modifies settings on your computer, which allows criminals to direct internet users to fraudulent websites and interfere with access to the internet.
You can check whether you computer is infected, by visiting a website run by the group brought in by the FBI: http://www.dcwg.org . If you are in Australia, you can go to the following website to check if you are infected by the DNS Changer Malware http://dns-ok.gov.au/.