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Thanks to better spam filtering techniques, most of us probably don’t see too many ads for “herbal Viagra” and similar concoctions in our inboxes these days, but that doesn’t mean spam isn’t still big business. According to the latest Threats Report by Intel’s online security firm McAfee (PDF), the overall amount of spam went down in the last quarter of 2011. One of the reasons for this, though, is that spammers have gotten a bit smarter and now use a more targeted — and sometimes even personalised — approach.
Spam down (In most countries)
It’s worth noting, though, that while spam was down overall, there were a few countries, including the U.S. and Germany, where spam volume was up slightly compared to last year.
While spam is down, malware is still growing.
With regard to PCs, the overall growth rate of malware samples McAfee encountered in the last quarter slowed down quite a bit from previous years. At the same time, though, the number of unique malware samples the company found increased.
The company’s researchers also noted that they discovered about 9 300 malicious websites per day in Q4 compared to just about 6,500 in Q3. Most of these sites were hosted in the U.S., followed by the Netherlands, Canada, South Korea and Germany.
Android malware still on the rise
Unsurprisingly, the largest growth area for mobile malware is Android. The last year and quarter were, in McAfee’s words, “by far the busiest periods for mobile malware we have yet seen.” The largest growth area here is for-profit SMS-sending Trojans and to bypass the Android Market’s increased security measures, the malware authors apparently use forums and other outlets to distribute their wares.