It’ s the first time that the FBI discloses this information, in the past the Bureau claimed the North Korea basically from the results of the analysis of the wiper malware used by hackers, the malicious code in fact was written in Korean and presents many similarities with other malicious code used by the government of the North Korea in cyber attacks against the South Korean systems.

The investigation is still ongoing, the cyber experts are evaluating how the hackers breached the Sony Pictures network to exfiltrate sensitive data from the corporate. According to early rumors, Sony Pictures had been targeted by “spear phishing” campaigns in previous months.

Although all point the finger at North Korea, I find it extremely interesting and plausible to the clarification of the popular expert Jeffrey Carr from his blog doubts the arguments provided by the FBI.

“The evidence that the FBI believes it has against the DPRK in the Sony attack stems from the data that it received on the Dark Seoul attack last year from the private sector. The FBI, the NSA, and the private security companies upon which they rely for information believe that any attack linked to a North Korean IP address must be one that is government sanctioned since North Korea maintains such tight control over its Internet and Intranet. That is the FBI’s single point of failure because while that might have been true prior to 2009, it isn’t true any longer. Access to those blocks is relatively easy if you go in through China, Thailand, Japan, Germany or other countries where North Korea has strategic connections“

Stay tuned …