Seventy journalists were killed in 2009, making it the worst year since records began 30 years ago, the Committee to Protect Journalists says. A massacre of 31 journalists in the Philippines broke the old record of 67 deaths, set only in 2007.
Some 150 journalists are currently in jail, including 60 in Iran where the CJP says the authorities have in effect criminalised journalism.
The group said online journalists were particularly vulnerable to repression.
According to its report, Attacks on the Press 2009, online reporters made up more than half of the news workers in prison worldwide.
As in the previous 10 years, China remained the world's worst jailer of journalists - with 24 being held. China was followed by Iran, Cuba, Eritrea and Burma.
Speaking at a news conference at the UN, CPJ officials said international pressure was still the most effective way to combat both government repression and impunity for non-state players who attacked journalists, the BBC's Barbara Plett reports from the United Nations headquarters in New York.
The growth of new media - such as blogs and social networking sites - had created new opportunities fight repression and censorship, they said.
But CPJ officials warned that states like China and Tunisia can sabotage such technologies and turn them against journalists.
It noted in particular that Teheran was using online social networks to go after dissidents and reporters.
Creating vibrant and secure global media requires new strategic thinking to bring killers to justice, to reduce the number of journalists in jail, and to support reporters working in exile or in repressive environments, CPJ executive director Joel Simon wrote in the report's introduction.
Top Comments
Disclaimer & comment rulesCommenting for this story is now closed.
If you have a Facebook account, become a fan and comment on our Facebook Page!