Information transmission has been tampered with, disguised or fraudulently used. According to the inquiry, the national safety net shows that.

1. Risk of forgery or fraud.

2. The risk of the identity of an unverified signer makes it impossible to determine that the identity has been intercepted.

3. The risk of unauthorized signature makes the operating system unable to protect the publisher's software, which leads to the ban.

4. Risk of leaking sensitive information.

5. Digital signature is a technology that associates a document with a specific number to verify the integrity of the document and the authenticity of its source.