The conflict in Ukraine unambiguously proves that information warfare became a very important, if not crucial, element of the Russian way of pursuing hybrid war. As an old maxim goes: Truth is a first casualty of war. This rule undoubtedly is even more relevant in hybrid war than it is in conventional war. Even before the conflict in Ukraine broke out in its entirety Russian, Ukrainian and Western societies have been subjected to a very intensive propaganda campaign initiated by the Kremlin and carried out by the Russian media and intelligence apparatus. In the eyes of the Russian strategists and military planners the information warfare is a normal, justified and desired response to political and security threats to Russia as they are perceived by Moscow. The conflict in Ukraine showed how Russian intelligence services employ information warfare in practice. Selected features of Russian information warfare in Ukraine will be discussed and elaborated in the presentation. Dramatic events in Crimea and Donbas taught us that informational threat in hybrid warfare by any means should not be underestimated and neglected.