The U.S. government's move to charge a North Korean government-backed computer programmer with the Sony hack and the spread of the destructive WannaCry virus not only highlights investigators' growing aptitude for tracing and linking threats but also provides companies with insight into how to detect such red flags, attorneys say.

The 179-page criminal complaint unsealed by the U.S. Department of Justice laid out detailed allegations against Park Jin Hyok, who federal prosecutors say was part of a North Korean-sponsored hacking team behind some of the most damaging recent cyberattacks.

Ballard Spahr privacy and data security attorney Ed McAndrew noted that law enforcement authorities "have become very adept at following cyber breadcrumbs and piecing together what may appear to be unrelated cyber activity."

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