It depends on your local laws and where you and the other website (well, the legal entity of) are based. As an example if you are both based in the UK the websi

It depends on your local laws and where you and the other website (well, the legal entity of) are based. As an example if you are both based in the UK the website could probably bring civil charges (i.e. sue you) for breach of contract, or even attempt to bring criminal charges under the Computer Misuse Act for unauthorised access to a computer system. If the website is in the UK, and you are in China it's probably not worth the effort.