Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Night Metropolis Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab with developer-controlled page; high reach.
• Uninstall and install URL hijacks redirect users to gameograf.com tracking URLs.
• No CSP declared (MV3) combined with innerHTML sinks raises DOM-XSS risk.
• Developer name blank; low install count (20) limits trust signals.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html; replaces every new tab for all users.
• uninstall_url_hijack crx setUninstallURL points to https://gameograf.com/?utm_source=extension&utm_medium=install
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=extension&utm_medium=install
• no_csp manifest content_security_policy is null; MV3 default applies but no explicit hardening.
• dom_xss_sink crx innerHTML assigned from variable in popup.js and calendar.js without sanitization.
• verified_publisher store support@gameograf.com verified; domain resolves; not throwaway.
• privacy_policy_adequate api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• low_installs store Only 20 installs; no ratings; developer_name blank; limits trust signal.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Night Metropolis Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 3.04 -> 5.54 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying search provider settings; medium risk on its own.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; narrowly targeted.
• chrome_url_overrides.newtab medium Replaces every new tab page; high reach, monetization-shape risk.

Pillar Scores

Bookkeeping