Whether online fraud will be caught depends on whether the amount of fraud constitutes the criteria for filing a criminal case. If the value of public and private property of online fraud is 3000 yuan, the case can be filed. There are unified provisions in the whole country for those who use telecommunication network to defraud. According to the relevant provisions of the Opinions on Several Issues Concerning the Application of Law in Handling Criminal Cases such as Telecommunication Network Fraud issued by the two high schools and one ministry, those who use telecommunication network technology to defraud public and private property with a value of more than 3000 yuan to 10000 yuan, 30000 yuan to 100000 yuan or 500000 yuan, It should be identified as "large amount", "huge amount" and "especially huge amount" in Article 266 of the Criminal Law.
 [Legal Basis]
 Article 1 of the Interpretation of the Supreme People's Court and the Supreme People's Procuratorate on Some Issues Concerning the Specific Application of Law in Handling Criminal Cases of Fraud states that those who defraud public or private property with a value of more than 3000 yuan to 10000 yuan, 30000 yuan to 100000 yuan or more, and 500000 yuan or more shall be identified as "large amount", "huge amount" "The amount is particularly huge".