Ukrainian President Petro Poroshenko said this at a sitting of the National Security and Defence Council (NSDC), which was dedicated to the basic principles of the information security, first of all threats to cybersecurity and their neutralization, as well as urgent measures on the protection of critical infrastructure of Ukraine, the president’s press service reports. President Poroshenko reminded that the cyberattack as of December 6 had put out of action the network of the State Treasury and the Finance Ministry, which caused disruption of the treasury service of managers and recipients of budget funds. He also added that those threats concerned not only the ministries and gave an example of interference in the work of Ukrzaliznytsia, the national railway company. President Poroshenko emphasized that the investigation of several incidents indicated direct or indirect involvement of secret services of Russia, which had unleashed a cyberwar against Ukraine. He also noted that Russia conducted such aggressive actions in cyberspace against other countries as well. “We are dealing with the global security challenge of Russia to the entire Euro-Atlantic community,” President Poroshenko said.