Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Oshi No Ko Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's own policy — not scoped to this extension; admits data collection and 3rd-party sharing (Privacy pillar: 10.0).
• Uninstall and install URL hijacks both redirect to gameograf.com with UTM tracking (+3.0+2.0 Webstore).
• NewTab override with search override creates monetization shell pattern (+2.0 Webstore).
• No CSP on MV3 extension with innerHTML DOM-XSS sinks in popup.js and calendar.js.

Evidence

• uninstall_url_hijack manifest setUninstallURL points to https://gameograf.com/?utm_source=extension&utm_medium=install (3rd-party tracking).
• install_url_hijack manifest onInstalled opens https://gameograf.com/?utm_source=pusheen&utm_medium=install.
• privacy_policy_generic store Policy URL is Google's own privacy policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• newtab_override_with_search manifest chrome_url_overrides.newtab + search permission = NewTab monetization shell pattern.
• dom_xss_sinks crx innerHTML assigned from variable in popup.js and calendar.js; no CSP present to mitigate.
• no_csp manifest content_security_policy is null; MV3 default applies but DOM sinks are unmitigated.
• developer_name_missing store developer_name field is empty string despite verified_publisher=true.
• verified_publisher store verified_publisher=true; gameograf.com resolves, not throwaway. Partial reputation discount applied.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Oshi No Ko Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.26 -> 7.76 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding search provider; medium risk for a NewTab extension.
• 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; standard for this category but monetization risk.

Pillar Scores

Bookkeeping