Russia's tech-savvy President Dmitry Medvedev took to his blog on Thursday to condemn a massive denial of service attack on the country's hugely popular blogging site LiveJournal.
The site's new Russian owners SUP said the three-day attack was the worst in the service's history and was by the end targeting the entire service rather than specific blogs.
In a LiveJournal comment, Medvedev called the attack "outrageous and illegal".
"What happened must be investigated by the administration of LiveJournal administration and law enforcement agencies," Medvedev said.
The problem started with attacks on Alexei Navalny, who has used his blog to talk about corruption in the government and the ruling United Russia party, said an expert at the Kaspersky Lab Internet security company.
Created in 1999 by a US college student, LiveJournal became immensely popular in Russia not just as a blogging tool but a platform for creative and political discussion.
Medvedev, who has promoted innovation as a tool of economic growth, has a LiveJournal blog as well as his own Twitter account, which he updates regularly.
Explore further: Russian bloggers accuse authorities of cyberwar