Court papers filed against Yu Pingan do not mention OPM, but they do suggest a connection between the two. The OPM hack is considered one of the worst-ever computer breaches of US government computer systems, because the hackers were able to access a huge volume of information from security clearance forms filed by federal workers and contractors.
The suspect, along with other conspirators in China "would acquire and use malicious software tools, some of which were rare variants previously unidentified by the FBI and information security community, including a malicious software tool known as 'Sakula','' the criminal complaint states.
The Sakula malware has previously been linked to the OPM hack, as well as other suspected computer system penetrations in the United States.
Yu, 36, was arrested Monday night when he flew into Los Angeles International Airport, officials said.
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