When Reuters say "When recipients opened these documents, they loaded malicious code onto their personal computers. For about a week in late August, California-based FireEye said its researchers were able to monitor the "inner workings" of the main computer server used by the hackers to conduct their reconnaissance and move across compromised systems."
does this mean Fireeye were in the know about these breaches suggesting that they supply these five with a product ................that failed? Or were brought in after the breach (how likely?)
Or a supplier to these five disclosed information to Fireeye?
Or.....just journalist speak?