(CBC) — On July 9, thousands of Canadians and hundreds of thousands of people worldwide could be without access to the internet after the FBI shuts down temporary DNS servers used to assist victims of a massive internet fraud ring.

All computers that still use these servers will meet a virtual brick wall on July 9 and be unable to connect to the internet until their computers are cleared of the associated ‘DNSChanger’ virus.

The shutdown of the temporary DNS servers by U.S. authorities is the last stage in Operation Ghost Click, a two-year international investigation that officially ended in November 2011.

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