Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Super Mario Galaxy Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with search permission — classic search/ad monetization shell pattern.
• Uninstall and install URL hijacking to gameograf.com UTM-tracked pages — traffic monetization.
• No CSP (csp_present=false) with innerHTML DOM-XSS sinks in popup.js and calendar.js.
• No developer name listed; low install count (22) with newtab+search override is tail-attack surface.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab.
• 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=lofi&utm_medium=install
• no_csp manifest content_security_policy is null; MV3 default applies but no explicit hardening.
• dom_xss_sinks crx innerHTML user-controlled assignments in popup.js and calendar.js with no CSP mitigating.
• no_developer_name store developer_name is empty string; reduces accountability.
• search_permission_newtab_combo manifest search permission + newtab override = monetization shell fingerprint.
• privacy_third_party_sharing api Policy fetched; third_party_sharing=true and data_collection=true; retention disclosed.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Super Mario Galaxy Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.32 -> 6.82 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding search provider; combined with newtab override raises monetization concern.
• chrome_url_overrides.newtab high Replaces new-tab page; primary vector for search hijacking and ad monetization.
• host_permissions: https://api.gameograf.com/* medium Scoped to developer's own API domain; acceptable but enables data exfil to dev server.

Pillar Scores

Bookkeeping