Spam in the form of HTML email is still rampant and accounted for 70 per cent of all email correspondence in September, according to a new report.

Symantec’s latest monthly spam report found while PDF, image and e-card spam is on the decline, HTML email spam is still the bane of companies’ and general internet users’ lives.

While the latest figures for email spam is up one per cent from the month before, PDF spam, which saw a surge in August, dipped last month. Image and e-card spam volumes also fell. Image spam went from ten per cent of total spam in August to seven per cent in September.

While PDF, image and e-card spam has gone down in volume, text and HTML-based attacks “are still very much in the wild”, the report said.

In a bid to evade spam catchers, spammers are increasingly using JavaScript to hide URLs from spam filters.

According to Symantec, 400,000 JavaScript-embedded spam messages were observed in a one-week period in September

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