abcnews.go.com/sections/world/DailyNews/militarycyberattack_010723.html
Space Command, which provides security for military computers, instructed all military organizations to block public access after a number of sites had contracted the virus, called the "Code Red" bug, according to an official. The virus is known as a "denial of service" bug, because it replicates itself by reading the log files on a network server and sending copies to other servers -- thereby multiplying and sometimes crashing a system -- and denying access to legitimate users of the site. One version of the virus, experts say, emblazons on sites it attacks the message: "HELLO! The flaw was announced last month when a patch was released to fix it. Authorized Department of Defense personnel continue to have access to the sites, Venable said. Pike says he first noticed blocked access to some sites Thursday morning. The Defense Department then expended "enormous efforts" at containing and then recovering from that virus, with personnel across the military pulled away from their primary responsibilities, according to a subsequent congressional report. At Least 225,000 Computer Systems Believed Infected In recent weeks, variations of the virus are believed to have infected at least 225,000 business and institutional computer systems. Last Thursday, infected computers were 15 instructed to flood the White House Web site, but with minutes to spare the White House was able to protect itself. Venable could not say when public access to the sites would resume. The effectiveness of the Code Red virus in exploiting network weaknesses has been known by the military since June, according to Venable. The fact the military did not have the patch fully installed, and then its decision to block public access to all of its networks, was received uncharitably from a critic of the Pentagon's cybersecurity policies. Submit RELATED STORIES 20 Viruses Target White House and Consumers 21 Pentagon Braces for Chinese Computer Attacks 22 Hacktivists Plotting Over Spy Plane?
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