First of all, the law pays attention to evidence.
You said "steal", did the other party change your password? If the password is changed, what is the physical value of your virtual property? At present, stealing online game accounts can be evaluated according to the proportion of service providers, and then it can be punished according to theft. If the other party changes your password or data, and there is no further malicious behavior, you can't be punished by law. Second, steal your private information. If the private person is just an ordinary social scope, communication content with others, contact information, hobbies, etc., it does not violate the law. If you steal your private photos and spread them, depending on the seriousness of the circumstances, you can be investigated for criminal responsibility at most.
If there is no evidence, or if the conditions I mentioned above are not met, it is impossible to prosecute.
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Reality:
The law has no specific provisions on online account theft at all. There are only some regulations that cause property losses, and those that cause mental losses are not explained. . .
To put it bluntly, be careful yourself. If you are not careful, you will find your own reasons. Your password or protection is not secure enough, and you can't blame others. The police are too lazy to sue you? Dead heart. Theft caused losses, and even the public security department could not file a case. How can you sue?