The threat posed by DNSChanger, the headline-grabbing Internet doomsday virus, has fizzled. But tech security analysts warn that there are even more sinister viruses around.
No significant outages were reported on Monday as the FBI removed a safety net erected last November to protect some 577,000 Windows PCs.
Without the FBI`s safety net, those PCs would have been cut off from accessing the Web, as authorities moved to dismantle the rogue servers that criminals were using to control DNSChanger-infected machines.
A minute after midnight on Monday, some 277,000 PCs, including 64,000 in the U.S., remained infected and at risk as the FBI took down its safety net. That`s a tiny fraction of the billions of Internet-connected computers and mobile devices.
Also, Internet service providers have been hustling to alert victims and help them stay connected, says Dan Brown, senior researcher at tech security firm Bit9. "Most of the major ISPs have been cooperating with the FBI," says Brown. "They have a vested interested in keeping their customers from being disconnected."
In the teeming cyberunderground, DNSChanger isn`t as potent as it was a year ago, when it first surfaced. That`s partly because most major anti-virus products have been tuned to watch for it and clean it up, says Johannes Ullrich, chief research officer at the SANS Security Institute.
Meanwhile, Google, Facebook and Comcast have been issuing alerts directing potential victims to an FBI-approved Web site: www.dcwg.org. It has links to services that will run a quick PC check, as well as guidelines to remove the infection.
Even after removing the infection, victims may still have to manually repair their "DNS settings." The instructions direct Windows PCs to the servers that convert a Web page`s textual name to its numerical IP address. The DNSChanger virus corrupted those settings.
"The DNS settings check isn`t that difficult," says security blogger Dennis Fisher,...
Posted by Asha 342 days ago (http://www.newsfactor.com)
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