Citizens who wish to post on the website of the Government's feedback arm must log in and register, starting next month, Prime Minister Lee Hsien Loong said on Friday.
The change marks the move towards a new framework Singapore needs to have to take full advantage of the new media environment, in light of a strategic shift in the media landscape.
This framework will widen the space for constructive discourse for Singaporeans, he added.
Addressing some 300 guests at a Lianhe Zaobao event to celebrate the Chinese daily's 90th anniversary, he said rules and norms have yet to catch up with the new reality of media today.
Mr Lee listed three problems that have arisen as a result of the rise of social media - hacking, cyber-bullying and trolling.
The new rules will protect responsible users from those who abuse cyberspace, he added.