Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Dandadan Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override: controls every new-tab page for all users, persistent high-reach surface.
• Privacy policy is Google's own policy — not scoped to this extension; admits data collection and 3rd-party sharing.
• Uninstall and install URL hijacks redirect to gameograf.com — monetization fingerprint.
• Two DOM-XSS innerHTML sinks with no CSP — exploitable if API data is attacker-controlled.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html — persistent new-tab hijack on every browser open.
• uninstall_url_hijack crx setUninstallURL → https://gameograf.com/?utm_source=extension&utm_medium=install
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=extension&utm_medium=install
• generic_privacy_policy api Policy URL is Google's own account policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_no_csp crx Two innerHTML sinks (popup.js, calendar.js) with csp_present=false — DOM-XSS risk if API response is tainted.
• no_developer_name store developer_name is empty string despite verified_publisher=true.
• no_csp_mv3 manifest content_security_policy is null; MV3 provides some default but no explicit hardening.
• low_installs store Only 13 installs — very low reach today, but NewTab category means full-browser-session access per user.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Dandadan Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.39 -> 7.89 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding default search; medium risk in isolation.
• host_permissions: https://api.gameograf.com/* low Scoped to dev's own API domain only; low blast radius.
• chrome_url_overrides.newtab high NewTab override gives persistent control over every new tab page — high-impact surface.

Pillar Scores

Bookkeeping