Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Christmas Tree Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab — persistent monetization/tracking surface with search API access.
• Privacy policy is Google's generic policy; not scoped to this extension, yet admits data collection and 3rd-party sharing (+10).
• Uninstall and install URL hijacks redirect to gameograf.com tracking URLs — monetization shell fingerprint.
• No developer name listed despite verified publisher badge; MV3 + no CSP + innerHTML sink = elevated XSS risk.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html; every new tab hijacked.
• uninstall_url_hijack crx setUninstallURL to 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
• privacy_policy_generic api Policy URL is Google's global policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_sink_innerhtml crx innerHTML assigned from variable in js/popup.js — DOM-XSS sink with no CSP to mitigate.
• no_csp manifest content_security_policy is null; MV3 defaults apply but no explicit hardening.
• stale_update store 15 months since last update; verified-publisher discount capped at -1.0 per invariant 0c (>18mo threshold close).
• missing_developer_name store developer_name is empty string despite verified_publisher=true.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Christmas Tree Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.34 -> 7.84 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying the browser search API; combined with newtab override elevates risk.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides.newtab high Replaces every new tab with extension page; high monetization/exfil surface.

Pillar Scores

Bookkeeping