OpenDNS, which provide a domain name service offering, also found that among its customers, Vietnam has the highest rate of Conficker.C infection, with 13.3 percent; followed by Brazil, 11.6 percent; the Philippines, 11.1 percent; Indonesia, 10.9 percent; Algeria, 7.3 percent; the U.S., 4.7 percent; and India, just less than 4.7 percent.
Vietnamese researchers at security firm BKIS, meantime, reported earlier today 1.3 million Conficker.C-infected machines. BKIS found that worldwide, China has the highest rate of infection, with 13.8 percent, followed by Brazil (10.4 percent) and Russia (9.3 percent), and with the U.S. in the 2 percent range.
British Telecom, meanwhile, said it detected more than 25 Conficker.C worm infection incidents among its U.S. customers' networks.
"In general, the level of sophistication of Conficker is impressive," OpenDNS's Ulevitch says. "It will continue to evolve to evade detection...but we haven't seen it doing anything malicious yet. It's scary in that regard."
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