4. NIST SSDF v1.1 的 4 大实践组,PO(Prepare the Organization)、PS(Protect the Software)、PW(Produce Well-Secured Software)、RV(Respond to Vulnerabilities)的工程语义?
5. NIST SSDF 20 个实践中,PO.1(Define Security Requirements for Software Development)、PS.1(Protect All Forms of Code from Unauthorized Access and Tampering)、PW.1(Design Software to Meet Security Requirements and Mitigate Security Risks)、RV.1(Identify and Confirm Vulnerabilities on an Ongoing Basis)的工程实现?