Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Nissan 300zw 2077 Live Wallpaper - New Tab Theme [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Uninstall and install URL hijack redirects to gameograf.com — monetization shell pattern.
• New-tab override with search permission is a known ad-monetization surface.
• No CSP declared (MV3 default strict helps but no explicit policy); innerHTML sinks present.
• Developer name missing; verified publisher but no display name reduces accountability.

Evidence

• uninstall_url_hijack manifest setUninstallURL → https://gameograf.com/?utm_source=extension&utm_medium=install (3rd-party redirect).
• install_url_hijack manifest onInstalled opens https://gameograf.com/?utm_source=extension&utm_medium=install.
• newtab_override manifest chrome_url_overrides.newtab = newtab.html; replaces browser new-tab page.
• no_csp manifest content_security_policy is null; csp_present == false.
• dom_xss_sinks crx innerHTML user-controlled assignments in popup.js and calendar.js without CSP.
• verified_publisher store gameograf.com verified; domain resolves; not throwaway.
• no_developer_name store developer_name is empty string; reduces accountability signal.
• privacy_policy_classification api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Nissan 300zw 2077 Live Wallpaper - New Tab Theme [adware] + malext.io malicious_extension_sentry; score 2.79 -> 5.29 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying search provider; moderate risk for a NewTab override extension.
• host_permissions: https://api.gameograf.com/* low Scoped to own API domain; matched stated function.
• chrome_url_overrides.newtab medium New-tab override replaces browser default page; monetization surface.

Pillar Scores

Bookkeeping