US largest exporter of unsolicited email ads: Report

A report found 42.53 per cent of all spam originated in the United States. The next largest source was South Korea, with 15.42 per cent.

The United States is the largest global source of unsolicited e-mail ads, known as spam, producing more than two of every five messages, a report by security firm Sophos showed.

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The Sophos report found 42.53 per cent of all spam originated in the United States. The next largest source was South Korea, with 15.42 per cent, and China and Hong Kong, accounting for a combined 11.62 per cent.

The report released on Tuesday suggested that a US law known as CAN-SPAM that took effect in January has done little to curb the flood on unwanted messages that some see as a threat to the Internet.

Chris Kraft, senior security analyst at Sophos, said the results showed little overall change from a similar survey in February for the United States.