Ukrainian security forces SBU official last week accused Russia of launching a recent Petya cyber attack on Ukraine. SBU said it received evidence of data from the Russian network attack in Kiev in December. Ukrainian SBU said the cyber attack did not have any real mechanism to ensure that the attacker received a ransom and decrypted the affected document, causing the SBU to believe that the ransom was just a pretext for its fight against the country's businesses and state institutions.
Russia has responded to these allegations, arguing that it is unfounded. Russia says its country's entities and institutions are also heavily affected by malware, which suggests that they are also targets of attacks that have prompted several security researchers to say that Russia should not be responsible for the attack.
At the beginning of the Petya network attack, we reported that the German ISPPosteo had blocked the contact e-mail account given by the attacker, so that users could not contact the hacker to decrypt their files. Thus, SBU says ransom is only a cover for state-level attacks. In December 2016, the last time the Petya attack, Ukraine's financial, transport and energy systems were affected by cyber attacks, in which the Ukrainian capital Kiev was affected by a power outage.
Due to the nature of the network attack, may not be able to prove who is the actual criminal elements, in recent years, presumably, the Russian side of the attack has been a great way to change, you can cover up the attack when the real location, so that victims are difficult to know Who is the attacker?