Spamming attacks in Britain have nearly quadrupled since the beginning of the year, according to analysis by anti-spam software company ClearMyMail.
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The results of its latest quarterly spamming index show that the average number of spam e-mails blocked per customer for the three months to June was 30,846, compared with 8,156 in the previous quarter.
The Royal Bank of Scotland was the top company in the personal-finance industry targeted by phishing attacks, says ClearMyMail, accounting for 43% of them. The bank was the target of only 0.02% in the previous quarter's spamming index.
And customers using Orange as an ISP receive the highest percentage of spam for the second consecutive index. The figures showed that 97% of all e-mails sent to an Orange ISP account were spam.
Orange said that there was no "direct link" between a person's ISP and spam levels.
Meanwhile, the UK had overtaken the US in the latest quarterly index as the source of the highest number of spam sent to e-mail accounts, accounting for 20%, a shade more than America.
Dan Field, ClearMyMail managing director, said, "These statistics are becoming increasingly worrying, and for the average amount of spam blocked per person to have nearly quadrupled in the last three months suggests that action desperately needs to be taken".