CM-03 (04) Security and Privacy Representativescm-3.4

CM-03 (04) requires an information security representative to be a MEMBER of the configuration change control element. This is the closest this plane comes to a membership claim it can check: a rule requiring the designated owners of the changed code to approve, a file naming who those owners are, and per-change approval records carrying identities, revisions and timestamps. What none of it establishes is that those identities ARE the security and privacy representatives the control names. That mapping lives in the change control charter, and a repository team called `security` is an assertion about a name. The gap is an identity mapping rather than a missing signal, which is exactly what the disposition said, and no amount of further collection on this platform closes it. THE SKIPPED LINE — this recipe's vacuity trap, and unusually it is documented by the vendor rather than inferred from an API shape. GitHub states plainly that "If any line in your CODEOWNERS file contains invalid syntax, that line will be skipped." So a `pull_request` rule with `require_code_owner_review` set to true, sitting over a CODEOWNERS file whose one line covering the infrastructure directory has a typo, requires review from the code owners of that directory — of which there are now none. The rule is green, the platform requests no reviewer, and the change merges on whatever approvals its author could find. Nothing in the rules API can see this, and nothing in a screenshot of the branch protection settings can either. `GET /repos/{owner}/{repo}/codeowners/errors` is the only endpoint in this recipe that sees it, and it is the entire reason the second clause exists. A MISSING FILE AND A CLEAN FILE ARE NOT DISTINGUISHED BY THE CLAUSE, AND THE THIRD COMMAND IS WHY. Nothing fetched documents what the errors endpoint returns when there is no CODEOWNERS file at all, so an empty `errors` array is the passing shape for a valid file and the plausible shape for an absent one — the plane's standing emptiness problem, arriving through a door that looks like a validator. The third command reads the file itself for exactly this reason: it is collected so a human can confirm there IS a file and see who it names. No clause is written over its contents, because who ought to own which path is the identity mapping this recipe cannot make, and a clause counting lines would be a clause asserting that a file is long. WHY THE STALE-APPROVAL CLAUSE IS HERE AND A LAST-PUSH ONE IS NOT. `dismiss_stale_reviews_on_push` is what stops an approval from outliving the change it approved: without it, a code owner approves, the author pushes again, and the approval carries over to code no owner has seen — a membership failure wearing the appearance of a membership success, and the one failure mode in this recipe that leaves a complete and convincing paper trail. `require_last_push_approval`, GitHub's option to "require an approval from someone other than the last person to push to a branch", is deliberately NOT asserted: it is a separation-of-duty property rather than a membership one, a small team can be operating correctly without it, and CM-03 (04) asks who sits on the element rather than whether two distinct people acted. WHAT A REVIEW RECORD PROVES AND WHERE IT STOPS. A review carries `state`, `user`, `submitted_at`, `commit_id` and `author_association`, so the record says a named platform identity approved a named revision at a named time — and `commit_id` is what makes it an approval of something rather than a timestamp. It does not say that the identity belongs to a person, that the person holds the role, or that the approval was informed. `author_association` is the closest thing to a role anywhere in the response and it is a repository-relationship enum — `MEMBER`, `COLLABORATOR`, `OWNER` — describing a relationship to the repository rather than a position in the organization, so no clause is written over it. The fourth and fifth commands are collected as a sample for a human to read against the charter, and no assertion reads them; a clause over an unbounded list of closed pull requests would be a clause about how many were sampled. NO `enforcement` CLAUSE APPEARS IN THIS RECIPE, and after the audit of this batch that is the correct answer for a better reason than the one first written. Every clause here except the second reads `/rules/branches/{branch}`, which GitHub documents as returning "all active rules that apply to the specified branch" and from which "Rules in rulesets with \"evaluate\" or \"disabled\" enforcement statuses are not returned" — so a dry-run ruleset cannot satisfy the first or third clause, and no guard against it is needed. The second clause reads a file parser that no ruleset governs at all: a CODEOWNERS file with a syntax error is broken whether the ruleset requiring code-owner review is active, evaluating or absent. An assessment wanting the dry-run finding itself gets it from `developer-change-control-and-integrity` on the same repository, where it belongs, being a property of the repository rather than of this control. KSI-CMT-RVP — the effectiveness of documented change management procedures is persistently reviewed — is claimed on the MECHANISM limb. A required approval per change, with the approver and the revision recorded, is the material a review of procedure effectiveness reads, and the rule is the documented procedure in executable form. Whether the procedure is EFFECTIVE is a judgement, and no API in this recipe makes it. KSI-PIY-RSD — the effectiveness of building security and privacy considerations into the Software Development Lifecycle and aligning with CISA Secure By Design principles is persistently reviewed — is claimed narrowly and should be read narrowly: requiring a security owner's approval at merge is one security consideration built into one point of the lifecycle. The indicator is about the whole lifecycle and about alignment with an external body of principles that nothing here reads. The evidence platform is itself an external system, and on this control the dependency runs through the identity provider as well; see `external_system`.