Prime Minister Najib Abdul Razak has once again reminded social media users not to be gullible.

Speaking at the Malaysia Social Media Week programme in Kuala Lumpur today, Najib said social media practitioners must be fair and responsible in what they write and post.

They must also be discriminating in what they read, added the prime minister.

"Don't just believe every post and tweet. For there is so much fake news out there that the Economist magazine this week even asked if social media is a threat to democracy," said Najib...