Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Kuromi Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's generic policy, not scoped to this extension — admits collection & 3rd-party sharing (Privacy +10.0).
• Uninstall and install URL hijacks redirect to gameograf.com tracking URLs (Webstore +5.0).
• NewTab override with 'search' permission is a monetization-shell pattern (Webstore +2.0).
• innerHTML user-controlled sinks in popup.js and calendar.js with no CSP — DOM-XSS risk (Code +2.0).

Evidence

• uninstall_url_hijack manifest setUninstallURL → https://gameograf.com/?utm_source=gameograf&utm_campaign=bg&utm_content=uninstall
• install_url_hijack manifest onInstalled opens https://gameograf.com/?utm_source=install&utm_campaign=bg&utm_content=install
• privacy_policy_generic api Policy URL is Google's account privacy policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• newtab_override manifest chrome_url_overrides.newtab = newtab.html; extension replaces every new-tab page.
• dom_xss_sink crx Two innerHTML-from-variable sinks (popup.js, calendar.js) with csp_present=false.
• no_csp manifest content_security_policy is null; MV3 strict default applies but no explicit hardening.
• verified_publisher_featured store verified_publisher=true and is_featured_by_google=true; discounts applied but capped by generic policy.
• no_developer_name store developer_name is empty string; reduces accountability despite verified badge.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Kuromi Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.49 -> 6.99 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading search queries; paired with newtab override raises monetization concern.
• chrome_url_overrides.newtab medium Replaces new-tab page — core NewTab monetization surface.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; low blast radius.

Pillar Scores

Bookkeeping