EUA atribuem à Coreia do Norte a autoria dos ataques à Sony Pictures


Os serviços secretos norte-americanos estão convencidos de que o Governo da Coreia do Norte esteve por detrás dos ataques informáticos que, nas últimas semanas, deixaram a Sony Pictures de rastos. A informação é avançada pelo New York Times, que representantes oficiais que falaram ao jornal em anonimato.

Citando também fontes oficiais em anonimato, a NBC News diz que o ataque surgiu fora da Coreia da Norte, mas que os hackers estavam a receber do país ordens.

A suspeita recaia sobre a Coreia do Norte desde o início da polémica – que surgiu antes da estreia do filme The Interview, uma comédia cuja história se desenvolve em redor de uma suposta tentativa de assassinato do líder norte-coreano, Kim Jong-Un. A Coreia do Norte, na voz da sua Comissão de Defesa Nacional, negou sempre, mas elogiou aquilo que considerou de “um acto de justiça realizado por apoiantes e simpatizantes da Coreia do Norte em resposta ao seu apelo”.

De acordo com o New York Times, a Administração de Obama não sabe ainda que medidas tomar face à revelação dos serviços secretos norte-americanos, encontrando-se inclusive dividida. Se por um lado há quem defenda uma confrontação directa do Governo norte-coreano, por outro há quem conteste com uma questão pertinente: quantas provas estarão os Estados Unidos dispostos a revelar sem denunciarem os meios pelos quais acederam às redes informáticas da Coreia do Norte?

A exibição do The Interview foi cancelada devido às ameaças do grupo Guardians of Peace, que assinou sempre os ataques à Sony Pictures, que expuseram inúmeros dados da empresa, incluindo salários dos funcionários e e-mails trocados com as mais variadíssimas entidades.

Update a 19/12/2014: o FBI confirmou a Coreia do Norte como responsável ao ataque.

Today, the FBI would like to provide an update on the status of our investigation into the cyber attack targeting Sony Pictures Entertainment (SPE). In late November, SPE confirmed that it was the victim of a cyber attack that destroyed systems and stole large quantities of personal and commercial data. A group calling itself the “Guardians of Peace” claimed responsibility for the attack and subsequently issued threats against SPE, its employees, and theaters that distribute its movies.

The FBI has determined that the intrusion into SPE’s network consisted of the deployment of destructive malware and the theft of proprietary information as well as employees’ personally identifiable information and confidential communications. The attacks also rendered thousands of SPE’s computers inoperable, forced SPE to take its entire computer network offline, and significantly disrupted the company’s business operations.

After discovering the intrusion into its network, SPE requested the FBI’s assistance. Since then, the FBI has been working closely with the company throughout the investigation. Sony has been a great partner in the investigation, and continues to work closely with the FBI. Sony reported this incident within hours, which is what the FBI hopes all companies will do when facing a cyber attack. Sony’s quick reporting facilitated the investigators’ ability to do their jobs, and ultimately to identify the source of these attacks.

As a result of our investigation, and in close collaboration with other U.S. government departments and agencies, the FBI now has enough information to conclude that the North Korean government is responsible for these actions. While the need to protect sensitive sources and methods precludes us from sharing all of this information, our conclusion is based, in part, on the following:

  • Technical analysis of the data deletion malware used in this attack revealed links to other malware that the FBI knows North Korean actors previously developed. For example, there were similarities in specific lines of code, encryption algorithms, data deletion methods, and compromised networks.
  • The FBI also observed significant overlap between the infrastructure used in this attack and other malicious cyber activity the U.S. government has previously linked directly to North Korea. For example, the FBI discovered that several Internet protocol (IP) addresses associated with known North Korean infrastructure communicated with IP addresses that were hardcoded into the data deletion malware used in this attack.
  • Separately, the tools used in the SPE attack have similarities to a cyber attack in March of last year against South Korean banks and media outlets, which was carried out by North Korea.

We are deeply concerned about the destructive nature of this attack on a private sector entity and the ordinary citizens who worked there. Further, North Korea’s attack on SPE reaffirms that cyber threats pose one of the gravest national security dangers to the United States. Though the FBI has seen a wide variety and increasing number of cyber intrusions, the destructive nature of this attack, coupled with its coercive nature, sets it apart. North Korea’s actions were intended to inflict significant harm on a U.S. business and suppress the right of American citizens to express themselves. Such acts of intimidation fall outside the bounds of acceptable state behavior. The FBI takes seriously any attempt – whether through cyber-enabled means, threats of violence, or otherwise – to undermine the economic and social prosperity of our citizens.