When revolutions toppled the ruling regimes of Egypt and Tunisia, the two countries were removed from the "Enemies of the Internet" list.
The list is drawn up each year by the international organization Reporters without Borders to reveal the worst violators of freedom of expression on the internet.
In this year's list, published on the eve of Friday's World Day Against Cyber-Censorship (also organised by Reporters without Borders), includes Saudi Arabia, Syria, Cuba, Myanmar, China, North Korea, Vietnam and Uzbekistan.
Egypt, Tunisia, Libya, Venezuela and France are included on a "Countries under Surveillance" list.
Reporters without Borders condemned the imprisonment of 119 people around the world for using the internet to express their views, mostly in China. Liu Xiaobo, a Chinese dissident who was awarded the 2010 Nobel Peace Prize is in a Chinese prison.
Though some consider the internet an instrument of sabotage, it is also used for official propaganda and its impact on politics grows every day. This is proved by the recent revolutions in the Arab world and the political issues raised by WikiLeaks, said Reporters without Borders.