Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — YouNativefy [browser-hijack] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy URL returns fetch error — effectively no accessible privacy policy for 13-install extension contacting GCP backend.
• Multiple innerHTML DOM-XSS sinks in content scripts on Netflix, Prime, YouTube without CSP to mitigate.
• new Function() constructors in bundled node_modules (ajv, webpack) with no CSP — amplifies injection risk.
• Brand impersonation signal: extension names/describes YouTube, Netflix, Disney+ without confirmed ownership.

Evidence

• privacy_policy_fetch_failed api privacy_policy_classification.fetched==false; HTTPError fetching https://younativefy.com.br/privacy → scored as no policy.
• brand_impersonation store brand_mention: disney/youtube/netflix mentioned; confirmed_owner==false; is_impersonation==true.
• dom_xss_no_csp crx 4 innerHTML sinks in content scripts + popup; csp_present==false; MV3 default CSP applies but no explicit extension CSP.
• function_constructor_node_modules crx 6 new Function() hits in ajv, tapable, terser, webpack node_modules; likely build artifacts but bundled into CRX.
• developer_identity_weak store developer_name empty; developer_email is free Gmail; no business domain verified.
• backend_endpoint manifest host_permissions include younativefy-backend-800430356291.us-central1.run.app; data sent to GCP run app.
• verified_publisher store verified_publisher==true; partially mitigates reputation risk but no featured badge.
• low_install_count store Only 13 installs; operator_cluster sibling_count==0; limited blast radius but tail-attack surface.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — YouNativefy [browser-hijack] + malext.io malicious_extension_sentry; score 4.33 -> 6.83 (+2.5 cap 2.5).

Permissions Breakdown

• activeTab low Scoped to user-initiated tab interaction only.
• storage low Local data persistence; limited risk.
• contextMenus low UI surface only; no data access.
• host:youtube/netflix/disney+/max/amazon/primevideo medium Content scripts on major streaming platforms; broad but matches stated language-learning function.
• host:younativefy-backend medium Calls dev-controlled backend; data sent to GCP endpoint without disclosed privacy policy.

Pillar Scores

Bookkeeping