American "FBI" warned companies that hackers use "malware" to perform destructive cyber attacks in the US, similar to the one experienced company "Sony Entertainment Rictures".
Cyber experts warn that what they experienced "Sony" is the first major destructive cyber attack against a company on US soil. Such attacks have so far been registered only in Asia and the Middle East, but none has ever been performed in the United States.
The report "FBI" did not specify how many companies were targeted for attack because the US agency otherwise publish their documents in the names of the "victims". On the "FBI" stated that now the "invaders" are unknown.
In Reliable warning of "FBI", published yesterday, are the technical details for "malicious software" which is used in the attack, as well as advice to protect corporations. Document by email is forwarded to some US companies are asked to share further information.
The reaction of the US Agency following last cyber attack "unprecedented" for which the sending of e-mail in the company "Sony" not worked seven days and currently disabled and other systems.
The attack was carried out in awkward moment for the company that is prepared to "drop" a few awaited films during key movie season during the holidays.
A spokeswoman for the "Sony" said the company returned part of the important services and to cooperate with authorities who are investigating the case.
US media say the "Sony" explore the possibility that stand behind that attack hackers from North Korea, who wanted to punish the film corporation for its support of the comedy "Interview" in which "CIA" recruited two journalists to kill North Korean leader Kim Jong.