Symantec has found that spam levels are at a two year low, despite the recent upsurge following the Christmas break.
In its MessageLabs Intelligence Report (PDF) for January, Symantec revealed spam now accounts for 78.6 percent of all email traffic – the lowest rate since March 2009, when it stood at 75.7 percent. In January of 2010, spam accounted for 83.9 percent of all email.
“We expect the spam levels to increase in time, but this may take several weeks as the pharmaceutical gangs stabilise,” said Paul Wood, MessageLabs Intelligence senior analyst with Symantec.cloud.
“The bottom certainly hasn’t fallen out of the spam market yet, although it is harder for the more casual spammer to be in business,” he continued. “The challenges are coming not only from law enforcement and greater international cooperation, but also from rival spam gangs and criminal operations. Spammers won’t send spam unless someone is prepared to pay them to do so, as we saw in December last year.”
Pharmaceutical spam was the most popular, accounting for 59.1 percent of all spam in January. Though it still makes up the majority, that number represents a dramatic drop-off from May 2010, when it represented up to 85 percent of all spam. Some of that can be attributed to Rustock going quiet, since it was both the largest botnet in terms of size and spamming potential, Wood said.
“It would seem that pharmaceutical spam is profitable for two reasons: one) with pharmaceutical spam, it is possible to accept payment for goods online… and; two) by presenting a professional-looking website it is possible to dupe unsuspecting or vulnerable customers into parting with their credit card details and personal information,” he said. This may then result in financial and ID fraud, and no package is received in the mail.”
When Rustock was dormant on the spamming front, pharmaceutical spam represented just 10 percent of all spam. Since its return, pharmaceutical spam has shot back up, and Rustock itself now accounts for 17.5 percent of all the spam flooding inboxes. The crown as the king of spam however belongs to the Bagle botnet, which now blasts out 20 percent of all spam messages, Symantec found.
Also in January, the amount of emails with malware decreased slightly to one in every 364.8 emails (.274 percent), a drop of .03 percent from December. More than 65 percent of email-borne malware contained links to malicious websites, a drop-off of 2.5 percent compared to last month.
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