A total of 11 Chinese leading Internet portals have signed a responsibility letter to prevent telecom and online fraud.

The 11 companies, which include Alibaba, Tencent, Baidu and Sina Weibo, signed the letter on Tuesday during the China Internet Conference in Beijing.

Money, a mobile phone, and a pair of handcuffs. [File Photo: IC]

The event was organized by the network security administration of the Ministry of Industry and Information Technology, the criminal investigation bureau of the Ministry of Public Security and the network comprehensive coordination management and law enforcement supervision bureau of the Office of the Central Cyberspace Affairs Commission.

The letter stresses establishing and improving the system of telecom and online fraud prevention, including strengthening the mechanism to close illegal accounts.

The letter plans to establish and improve the fraud risk inspection and early warning and rapid response mechanism.

According to the letter's requirements, the implementation of the responsibility for preventing telecom and online fraud will be included in the annual report of the enterprise's telecommunication business operation.