Ukrainian hackers shut down Russian state news agency VGTRK's online broadcasting and streaming services on Monday – president Vladimir Putin's 72nd birthday – as Kremlin officials vowed to bring those responsible for the "unprecedented" cyber attack to justice.Putin's press secretary Dmitry Peskov confirmed the breach to Russian media and called it "an unprecedented hacker attack on [VGTRK's] digital infrastructure." VGTRK, which owns and operates five national TV channels, five radio stations, and 80 regional TV and radio networks, initially reported the digital intrusion Monday night, claimed that despite the digital intrusion, "no significant damage was done to the media holding's work."Later in the day, Russian Foreign Ministry spokesperson Maria Zakharova told state news org, Interfax, that the cyber attack was part of hybrid war effort, blamed the "collective West," and pledged to raise the issue with the United Nations and UNESCO."Who is behind a specific attack will be determined by the competent authorities and departments, but we understand that when the collective West says that it is aiming to inflict a strategic defeat on Russia, this includes an attack on the media," Zakharova told reporters.