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Microsoft security experts are having their credentials called into question after sending out premature warnings to users urging them to protect themselves against a new form of covert malware. The Trojan was believed to be so indestructible that ... only a reinstallation of the entire Windows operating system would remove its presence. Microsoft first took notice of the Trojan (called Win32/Popureb.E.) sometime last week. After weighing its potential for harm, security officials reasoned that it contained a rootkit hiding beneath an infected machine's boot sector. Trojan Swaps Write Operation ... (view more)