Symantec researchers have identified a particularly sophisticated piece of malware, called “Regin” that was likely developed by a nation state and has been used to spy on governments, infrastructure operators, businesses, researchers and individuals since at least 2008.

“Regin displays a degree of technical competence rarely seen,” Symantec said in a statement Sunday, released along with a technical white paper about the malware. Indications are that Regin “is one of the main cyberespionage tools used by a nation state.”

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