Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — BMW M4 Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab — maximum daily reach for wallpaper extension.
• Uninstall URL hijack redirects to gameograf.com UTM link — monetization shell pattern.
• Install URL hijack opens gameograf.com on install — unsolicited navigation.
• No CSP declared (MV3 relaxed default) paired with innerHTML DOM-XSS sink in popup.js.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every 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
• no_csp manifest content_security_policy is null; csp_present=false. MV3 default applies but no explicit hardening.
• dom_sink_innerhtml crx js/popup.js: innerHTML assigned from variable — DOM-XSS risk with no CSP guard.
• stale_extension store Last updated June 2025 but months_since_update=15 indicates prior scoring period; 6-12mo maintenance penalty.
• verified_publisher store Developer has verified publisher badge; gameograf.com resolves and is not throwaway.
• no_developer_name store developer_name is empty string; reduces accountability signal despite verified publisher.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — BMW M4 Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.54 -> 7.04 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying browser search context; medium risk on its own.
• host_permissions: https://api.gameograf.com/* low Scoped to developer-owned API domain; limited blast radius.
• chrome_url_overrides.newtab medium Replaces new-tab page; high user-reach surface, monetization vector.

Pillar Scores

Bookkeeping