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Fighting Viruses from Outside the Network

T.H.E Journal, by Dian Schaffhauser

Around Christmas 2009 the network operations manager and his IT team at the Montgomery Independent School District in Texas (about 60 miles north of Houston) noticed a dramatic slowdown in login times. "Our utilizations on [primary domain controllers and backup domain controllers] went way up. They'd be working three to four times harder than they had been a month before," recalled Thornton. Analysis of the event logs showed that malware was attempting a brute-force attack using automatically generated log-in credentials against the district's Windows 2003 and 2008 servers.

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