Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Anime Girl and Kuromi Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's generic account policy — not scoped to this extension; admits data collection and 3rd-party sharing.
• NewTab override + search permission: high-reach monetization surface installed on every new tab.
• Uninstall and install URL hijacks to gameograf.com UTM links — traffic monetization pattern.
• Two unguarded innerHTML sinks (popup.js, calendar.js) with no CSP — DOM-XSS risk.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html; replaces new-tab for all users.
• uninstall_url_hijack crx setUninstallURL → https://gameograf.com/?utm_source=gameograf&utm_medium=link&utm_campaign=bg&utm_content=uninstall
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install&utm_medium=link&utm_campaign=bg&utm_content=install
• generic_privacy_policy store Policy URL is Google account privacy page; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_sink crx innerHTML assigned from variables in popup.js and calendar.js with no CSP — DOM-XSS vector.
• no_csp manifest content_security_policy is null; MV3 default applies but innerHTML sinks increase risk.
• search_permission_newtab manifest search permission + newtab override combined = search monetization surface.
• no_developer_name store developer_name is empty string despite verified_publisher=true and is_featured_by_google=true.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Anime Girl and Kuromi Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.58 -> 7.08 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows manipulation of default search provider; common monetization vector in NewTab extensions.
• 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; high-reach surface, monetization and data collection opportunity.

Pillar Scores

Bookkeeping