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Attackers going after end users rather than servers
- — 23 February, 2010 11:48
Rather than targeting Web and email servers, attackers these days are prone to going after enterprises from the inside out, compromising end user systems and then using them to access confidential data, according to a Web traffic analysis report by security-as-a-service provider Zscaler.
Based on a recent study of traffic passing through its global network, Zscaler's "State of the Web -- Q4 2009" report also notes trends including issues with botnets, corporate Internet access policies, and the use of the Internet Explorer 6 browser. Officially being released on Tuesday, the study analyzes Web traffic volumes covering several thousand Web transactions per second and hundreds of billions of Web transactions.
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"The malicious content will then compromise the end user either through a vulnerable browser or through vulnerable client applications such as Adobe Acrobat Reader," Geide said. Malware then can steal victims' credentials.
"It's recommended that users take extra precaution when doing financial transactions online and if at all possible to utilize Web-based protection," Geide said. He acknowledged Zscaler offered services to remedy the issue but noted the company is not the only vendor to do so.
Zscaler also found significant use of the Internet Explorer 6 browser, even though it has been succeeded by two more secure generations of Microsoft's browser. Version 6, for instance, does not maintain malicious URL and phishing block lists, the report said.
Botnets present issues, according to Zscaler. "We're seeing a lot of botnets," Geide said. Zscaler blocks botnets, which can take over systems, said Geide. Zscaler also found some users attempting to deploy anonymizers, which hide a client IP address to enabie access to undesirable content such as gambling or pornography sites, he said.
Another issue, darknets, involves unallocated IP space and infected hosts on the network. This can lead to disclosures of internal information, said Geide. Also, attackers have launched phishing attacks from sites such as the recently removed fake social networking site, coolxd.com, according to Zscaler.
Additionally, ZScaler found that the Firefox browser is slowly gaining wider adoption, although the company needs more time to determine precise browser usage trends. "Internet Explorer is still leaps and bounds ahead of Firefox as far as the enterprise user goes," said Geide. Firefox gained more than 6 percent in market share in December, Zscaler found. Still, Internet Explorer's share was at about 70 percent by the end of 2009.
Zscaler found Facebook predominant as a social networking site. Three-quarters of social networking traffic traversing the Zscaler network went to Facebook.
This story, "Attackers going after end users rather than servers," was originally published at InfoWorld.com. Follow the latest developments in security at InfoWorld.com.