diff --git a/changelog.d/garrytan-gsta-84-cookie-import-trust-note.md b/changelog.d/garrytan-gsta-84-cookie-import-trust-note.md
new file mode 100644
index 000000000..d1c702e3a
--- /dev/null
+++ b/changelog.d/garrytan-gsta-84-cookie-import-trust-note.md
@@ -0,0 +1,4 @@
+**/setup-browser-cookies now warns that the fallback browser still trusts the compromised eMudhra intermediates (#3338).** BROWSER.md carried this warning since v1.91.239.0, but the cookie import skill did not, so an agent importing signed-in cookies into the bundled Chromium never told the user.
+
+### Changed
+- **`setup-browser-cookies/SKILL.md.tmpl`**: before the import, the agent tells the user once that gstack's bundled Chromium still accepts certificates from those intermediates, says not to use the imported sessions on a network they do not trust until the Playwright bump, and points to `BROWSER.md`, **TLS trust: the bundled Chromium's root store**.
diff --git a/setup-browser-cookies/SKILL.md b/setup-browser-cookies/SKILL.md
index c193d6c3f..6fda4ea47 100644
--- a/setup-browser-cookies/SKILL.md
+++ b/setup-browser-cookies/SKILL.md
@@ -175,6 +175,8 @@ Use the picker when any of answers 1-2 is still open; it asks for them. Use dire
 $B goto "<url>"
 ```
 
+Tell the user once, before the import: this browser trusts the root store built into gstack's bundled Chromium, which still accepts certificates from the compromised eMudhra intermediates ([#3338](https://github.com/garrytan/gstack/issues/3338)). Until gstack moves to a Playwright release that drops them, don't use the imported sessions on a network the user does not trust. That same root's `BROWSER.md`, **TLS trust: the bundled Chromium's root store**, has the details and the check.
+
 ## 4. Import
 
 Picker (the user confirms the browser, profile and domains there, ticks verification if they asked for it, then tells you when done; the link works once, for five minutes, so rerun the command if it expires):
diff --git a/setup-browser-cookies/SKILL.md.tmpl b/setup-browser-cookies/SKILL.md.tmpl
index b8c81bfa1..e7e4a2f99 100644
--- a/setup-browser-cookies/SKILL.md.tmpl
+++ b/setup-browser-cookies/SKILL.md.tmpl
@@ -51,6 +51,8 @@ Use the picker when any of answers 1-2 is still open; it asks for them. Use dire
 $B goto "<url>"
 ```
 
+Tell the user once, before the import: this browser trusts the root store built into gstack's bundled Chromium, which still accepts certificates from the compromised eMudhra intermediates ([#3338](https://github.com/garrytan/gstack/issues/3338)). Until gstack moves to a Playwright release that drops them, don't use the imported sessions on a network the user does not trust. That same root's `BROWSER.md`, **TLS trust: the bundled Chromium's root store**, has the details and the check.
+
 ## 4. Import
 
 Picker (the user confirms the browser, profile and domains there, ticks verification if they asked for it, then tells you when done; the link works once, for five minutes, so rerun the command if it expires):
diff --git a/test/helpers/manual-judge-review-fixture.ts b/test/helpers/manual-judge-review-fixture.ts
index b5f610f52..ca1ae4e31 100644
--- a/test/helpers/manual-judge-review-fixture.ts
+++ b/test/helpers/manual-judge-review-fixture.ts
@@ -61,10 +61,18 @@ const LATER_COOKIE_ORDER_EDITS: Array<[string, string]> = [
   ["# view the page; only --verify-auth proves sign-in", "# confirm the intended account"],
 ];
 
+// The #3338 trust warning (GSTA-84) added one paragraph after step 3's goto
+// (two lines longer). Removing it first lets the GSTA-49 reversal match.
+const LATER_TRUST_PARAGRAPH = "Tell the user once, before the import: this browser trusts the root store built into gstack's bundled Chromium, which still accepts certificates from the compromised eMudhra intermediates ([#3338](https://github.com/garrytan/gstack/issues/3338)). Until gstack moves to a Playwright release that drops them, don't use the imported sessions on a network the user does not trust. That same root's `BROWSER.md`, **TLS trust: the bundled Chromium's root store**, has the details and the check.\n\n";
+
 export function approvedCookieWorkflowSource(source: string): string {
   let removedLines = 0;
   let removedEntrypointLines = 0;
   let reordered = source;
+  if (reordered.includes(LATER_TRUST_PARAGRAPH)) {
+    removedEntrypointLines += LATER_TRUST_PARAGRAPH.split('\n').length - 1;
+    reordered = reordered.replace(LATER_TRUST_PARAGRAPH, '');
+  }
   for (const [later, earlier] of LATER_COOKIE_ORDER_EDITS) {
     if (!reordered.includes(later)) continue;
     removedEntrypointLines += later.split('\n').length - earlier.split('\n').length;