How can I stop receiving fraudulent short messages from people who pretend to be mobile?

It is best to protect personal information, or download a third-party security software to protect the security of your mobile phone, so as to avoid the harassment of these frauds as much as possible, such as Teng Xun Mobile Manager: it is based on Teng Xun Security Cloud Library, Security Joint Laboratory Anti-telecom Network Fraud Expert Think Tank, Hawkeye Intelligent Anti-phone Fraud Box, and uses the 800 million user reports of Teng Xun Mobile Manager and the massive anti-fraud data accumulated by alliance members to build the anti-fraud cooperation platform "Guardian Plan" and develop the "Kirin Pseudo Base Station Real-time Detection System". I hope my answer can help you ~