tailieunhanh - Q1 2009 Internet Threats Trend Report - Conficker Worm Infects Millions Around the World

The major news of the first quarter was the rapid propagation of the Conficker worm. Research indicates its three variations have infected more than 15 million computers, weaving a massive zombie botnet, since appearing on the scene in November 2008. The botnet lay dormant for weeks, leaving computer users nervous and vulnerable; and only in the last days leading up to the publication of this report did it begin to be activated for malicious purposes. Throughout the quarter, spammers and malware distributors continued to exploit legitimate sites to bypass traditional content filtering technologies. Recent tactics include the targeting of ISPs and the borrowing of images from legitimate, well-known hosts to use in e-mail messages. Another growing trend is the use of social networking sites. | corr iouch PANDA SECURITY Real Security. In Real Time. Q1 2009 Internet Threats Trend Report Conficker Worm Infects Millions Around the World April 14 2009 Q1 2009 Internet Threats Trend Report Introduction The major news of the first quarter was the rapid propagation of the Conficker worm. Research indicates its three variations have infected more than 15 million computers weaving a massive zombie botnet since appearing on the scene in November 2008. The botnet lay dormant for weeks leaving computer users nervous and vulnerable and only in the last days leading up to the publication of this report did it begin to be activated for malicious purposes. Throughout the quarter spammers and malware distributors continued to exploit legitimate sites to bypass traditional content filtering technologies. Recent tactics include the targeting of ISPs and the borrowing of images from legitimate well-known hosts to use in e-mail messages. Another growing trend is the use of social networking sites . Facebook Twitter for phishing schemes. By pulling on the heartstrings of networks of friends unknowing users have fallen victim to money-making and passwordstealing schemes. Q1 2009 Highlights The Conficker worm infected more than 15 million computers since its first appearance last Fall. Loan spam jumped to the top of the list of top spam topics with 28 this quarter. Users of social networking sites fell victim to new more complex phishing attacks. Computers Technology sites and Search engines Portals are among the top 10 Web site categories infected with malware and or manipulated by phishing. Brazil continues to lead in zombie computer activity producing nearly 14 of zombies for the quarter. Spam levels averaged 72 of all email traffic throughout the quarter and peaked at 96 in early January. It then bottomed out at 65 in February. Spammers attacked large groups of an ISP s users and moved to the next ISP in a targeted spam outbreak. An average of 302 000 zombies were .

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