The CAC will ban media-related mobile applications from sending notifications from independent social media accounts operating in violation of regulations, and will filter what it sees as harmful and undesirable information, Xie said.
The CAC will also work with financial regulators to "rectify" self-published financial accounts that have spread rumours, Xie said, to bring the dissemination of financial information under control.
"As soon as the statement was released, bonds rallied, causing yields to drop and stocks to hit new highs," noted market analyst Fawad Razaqzada at ThinkMarkets.
Major eurozone stock markets meanwhile retreated at the start, with Frankfurt's DAX 30 index down 0.3 percent to 13,263.83 points and the Paris CAC 40 losing 0.4 percent to 5,589.26.