This is totally fine. If the photo of you holding your ID card and your mobile phone number have been obtained by scammers. This is very dangerous for your financial security. So theoretically all copies of ID cards. As well as pictures of ID cards, they should be watermarked when used to indicate their purpose. This cannot be used for other purposes. As for the method of watermarking, you can find a guide on Baidu. It can be used not only for online loans, but also for real loans. Of course, if you find it, you can report it to the Economic Investigation Department of the Public Security Bureau. But after all, we still have to investigate. There is no 100% guarantee that all your losses will be recovered. If you have done this before, be careful in the future.