In the same month, the site was subjected to a severe DDo S attack, which briefly put it offline.
The user base reached 1 million in July 2007, and 10 million in April 2008.
On October 2013, VKontakte was cleared of copyright infringement charges by a court in Saint Petersburg.
VK performed DDOS attacks on certain sites, making users' browsers send multiple requests to the target site without their consent.
In December 2008 VK overtook rival Odnoklassniki as Russia's most popular social networking service.
Founder and CEO Pavel Durov owned 20% of shares (although he had majority voting power through proxy votes), and a trio of Russian-Israeli investors, Vyacheslav Mirilashvili (Mikhael Mirilashvili's son) and Lev Leviev, On Group announced that it has decided to yield control of the company to Durov by offering him the voting rights on its shares.
For example, all private messages in the Soviet version have a stamp saying 'passed server censorship'.
The pre-revolutionary version uses old-style Russian orthography. Musicians that use VK for promotion often upload their own tracks to their official VK pages.