Prime Minister Najib Abdul Razak has warned that allegations on the social media may not necessarily reflect the truth.

His blog posting today comes in the wake of scathing attacks from former prime minister Dr Mahathir Mohamad in a series of videos posted on the Internet.

"A lot of information is blown out of proportion and twisted until it is misunderstood.

"We have been receiving such information for years until many have been influenced," he said.

Najib said in this information age, the social media has brought about the "democratisation of information".

"This means information is channelled two ways and we are free to spread our own information.

"There is good and bad to the 'democratisation of information' because all information, including false information, can be widely spread," he added.

In the era of perception, Najib said the people must be wise and not be fooled by erroneous information.

"The majority of accusations and 'spins' do not reflect the reality of the situation of a particular issue or the statements made by leaders, be it the opposition or government.

"So we must be wise in evaluating the authenticity of the information and checking the source as well," he added.

Since early this month, Najib has come under tremendous criticism from Mahathir.

Among others, Mahathir warned that if Najib continued to lead, BN and Umno could lose power.