Both XML and CSV are data exchange formats, and there is no difference in security. So direct comparison is not appropriate. The following are their respective security:

1, XML can use digital signature, encryption, XML security entities and other mechanisms to provide higher security, because it can use XML encryption and XML digital signature description to encode and verify documents.

2.CSV is relatively simple and does not support advanced security measures such as encryption and signature, but it can ensure the security of data transmission through transmission protocols (such as HTTPS) or other encryption mechanisms.