Is the Web service in the blog Park insecure?

Http://passport.cnblogs.com/ws/UserService.asmx

Because I used Firefox to view the source file and accidentally saw this web service, I opened it and looked at it. I found that it could be used. I think I can change it here, otherwise, I think it is not good for others to call this website!

The following operations are supported. for a formal definition, please review the service description.

• Changedisplayname

 

• Changeemail

 

• Changeloginname

 

• Displaynameexist

 

• Emailexist

 

• Getauthencode

 

• Loginnameexist

Is the Web service in the blog Park insecure?

It can be called after testing!

Ajax call I think it's pretty good to use the ashx file.

All great actions and thoughts have a negligible start. I am learning the knowledge and hope to succeed! Don't give up on me. I 'd like to make friends all over the world!