Chinese Malware Hits Systems on Guam. Is Taiwan the Real Target?
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The code, which Microsoft said was installed by a Chinese government hacking group, set off alarms because Guam would be a centerpiece of any U.S. military response to a move against Taiwan.

Microsoft detected what they say is intrusive computer code appearing in telecommunications systems in Guam and elsewhere in the United States. Guam, with its Pacific ports and vast American air base, would be a centerpiece of any American military response to an invasion or blockade of Taiwan by the Chinese government.