Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Beautiful Blonde Witch Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces browser new-tab page — search/ad monetization vector.
• Privacy policy is Google's generic policy, not scoped to this extension; admits data collection and 3rd-party sharing.
• Uninstall and install URL hijacks redirect to gameograf.com with UTM tracking parameters.
• Two innerHTML DOM-XSS sinks without CSP; no content_security_policy defined (MV3 defaults apply but no explicit hardening).

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html; replaces every new-tab page for all users.
• privacy_policy_generic store Policy URL is Google's own account privacy policy — scope_extension=false, data_collection=true, third_party_sharing=true.
• 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
• dom_xss_sink crx innerHTML assignments in popup.js and calendar.js without sanitization; csp_present=false.
• no_developer_name store developer_name is empty string; verified_publisher=true but no display name.
• new_tab_monetization_shape manifest search permission + newtab override + UTM install/uninstall hooks = monetization shell pattern.
• low_install_newtab store Only 22 installs with newtab override and search permission — tail-attack-surface anomaly.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Beautiful Blonde Witch Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.41 -> 7.91 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying search provider; paired with newtab override raises monetization risk.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides.newtab medium Replaces new-tab page — prime real estate for ad monetization and search hijacking.

Pillar Scores

Bookkeeping