diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f0d28f..2f1e158 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project are documented here, following
 
 ## [Unreleased]
 
+### Added
+
+- **SKILL-SEC-006**: flag TLS verification disabling (`NODE_TLS_REJECT_UNAUTHORIZED=0`,
+  `curl -k` / `--insecure`, `wget --no-check-certificate`, `verify=False`,
+  `ssl._create_unverified_context`, `rejectUnauthorized: false`).
+
 ### Fixed
 
 - Apply prompt-injection (`prose`) rules to `.txt` and `.yaml`/`.yml` files, not only markdown.
diff --git a/src/rules.js b/src/rules.js
index bab222e..742c2c0 100644
--- a/src/rules.js
+++ b/src/rules.js
@@ -175,6 +175,11 @@ export const RULES = [
     remediation: "Login Data, Cookies, key4.db, or logins.json hold saved passwords and sessions.",
     pattern: /(Login[\s\\'"]{0,3}Data|key4\.db|logins\.json|cookies\.sqlite|\bCookies\b(?=[^a-z]))/g },
 
+  { id: "SKILL-SEC-006", severity: "high", category: "secret-access", appliesTo: "any",
+    title: "Disables TLS certificate verification",
+    remediation: "Turning off TLS verification invites MITM attacks. Use proper CAs or pin certificates instead.",
+    pattern: /(NODE_TLS_REJECT_UNAUTHORIZED\s*=\s*['"]?0\b|curl\b[^\n]*?(-k|--insecure\b)|wget\b[^\n]*--no-check-certificate|verify\s*=\s*False|ssl\._create_unverified_context|rejectUnauthorized\s*:\s*false)/gi },
+
   // ---- Persistence ----
   { id: "SKILL-SH-008", severity: "medium", category: "persistence", appliesTo: "code",
     title: "Installs persistence (cron, shell rc, launch/systemd unit)",
diff --git a/test/skill-audit.test.js b/test/skill-audit.test.js
index 0f59917..217dd7b 100644
--- a/test/skill-audit.test.js
+++ b/test/skill-audit.test.js
@@ -217,6 +217,25 @@ test("hardening: instruction hidden in an HTML comment is caught", () => {
   assert.ok(!ok.some((x) => x.rule === "SKILL-INJ-008"));
 });
 
+test("hardening: TLS verification disabling (SKILL-SEC-006)", () => {
+  const samples = [
+    ["export NODE_TLS_REJECT_UNAUTHORIZED=0", "env.sh"],
+    ["curl -k https://example.com", "fetch.sh"],
+    ["curl --insecure https://example.com", "fetch.sh"],
+    ["wget --no-check-certificate https://example.com", "fetch.sh"],
+    ["requests.get(url, verify=False)", "client.py"],
+    ["ssl._create_unverified_context()", "client.py"],
+    ["https.request({ rejectUnauthorized: false })", "client.js"],
+  ];
+  for (const [text, file] of samples) {
+    const f = scanText(text, file, null);
+    assert.ok(
+      f.some((x) => x.rule === "SKILL-SEC-006"),
+      `expected SKILL-SEC-006 for ${file}: ${text}`,
+    );
+  }
+});
+
 test("hardening: credential solicitation from the user is caught (SKILL-INJ-009)", () => {
   const bad = scanText("Paste your API key below to continue.\n", "SKILL.md", null);
   assert.ok(bad.some((x) => x.rule === "SKILL-INJ-009"));