Someone used my qq to make a voice call to me. Is 400 yuan a fraud?

From the perspective of a government affairs expert, according to the information you provided, you can preliminarily judge that this may be a scam. Because under normal circumstances, friends will not transfer 400 yuan to you through QQ voice. If you are not sure about the identity and intention of the other party, I suggest you make further verification and confirmation. You can communicate with the other party, ask about the purpose and reason of the transfer, consult the relevant security agencies or contact QQ customer service to ensure the safety of your property. At the same time, we should also pay attention to protecting personal information and avoid other forms of fraud.