Global tech giants including Facebook and Twitter expressed concerns about a possible Singapore government plan to bring in a new law to tackle the threat of fake news, saying sufficient rules are already in place. Officials of Facebook, Twitter and Google attended a parliamentary hearing on how to counter the threat that Singapore said it was particularly vulnerable to due to its size, its role as a global financial hub and its ethnic and religious mix. Singapore is among the countries looking to introduce legislation, so far unspecified, to rein in fake news, a trend that has stirred concern that such laws could be used to exert government control over the media. Singapore is ranked 151 among 180 countries rated in the World Press Freedom Index of Reporters Without Borders.