Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Noot Noot Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with uninstall+install URL hijack to gameograf.com — monetization shell fingerprint.
• search permission paired with newtab override enables search provider manipulation.
• No CSP on MV3 extension; innerHTML sinks in popup.js and calendar.js present DOM-XSS risk.
• 12 external JS hosts far exceeds stated wallpaper function; contacts Google services and OpenAI.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html; replaces new-tab page for all sessions.
• uninstall_url_hijack crx setUninstallURL → https://gameograf.com/?utm_source=extension&utm_medium=install
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=extension&utm_medium=install
• js_external_hosts_broad crx 12 external hosts including chat.openai.com, mail.google.com, calendar.google.com — exceeds wallpaper scope.
• no_csp manifest content_security_policy is null; csp_present=false on MV3 extension.
• dom_xss_sinks crx dom_sink_innerhtml_userctrl in js/popup.js and js/calendar.js; no CSP amplifies risk.
• privacy_policy api Policy fetched, scoped, data_collection=true, retention=true, third_party_sharing=true; adequate.
• search_engine_count_1 api Only google.com seen; no multi-search-engine anomaly triggered.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Noot Noot Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.08 -> 6.58 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading and modifying search provider; medium risk for NewTab override pattern.
• host_permissions: https://api.gameograf.com/* low Scoped to own API domain; low risk in isolation.
• chrome_url_overrides.newtab medium Replaces new-tab page; core mechanism for NewTab monetization shells.

Pillar Scores

Bookkeeping