Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Ninetales Pokemon Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's generic policy — does NOT scope to this extension; admits data collection & 3rd-party sharing (+10 privacy pillar).
• New-tab override combined with uninstall/install URL hijack to gameograf.com indicates monetization shell pattern.
• Two DOM-XSS innerHTML sinks (popup.js, calendar.js) with no CSP present elevate DOM injection risk.
• No developer name listed; verified publisher but policy domain mismatch undermines accountability.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces new-tab page, monetization-shape pattern.
• uninstall_url_hijack crx setUninstallURL to https://gameograf.com/?utm_source=gameograf — 3rd-party tracking on uninstall.
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install — 3rd-party tracking on install.
• generic_privacy_policy api Policy URL is Google's own privacy page; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_sink crx innerHTML assigned from variable in popup.js and calendar.js with no CSP — DOM-XSS risk.
• no_csp manifest content_security_policy is null; MV3 default applies but DOM sinks are unmitigated.
• no_developer_name store developer_name is empty string; reduced accountability despite verified_publisher=true.
• verified_publisher store verified_publisher=true provides partial trust signal; domain resolves and not throwaway.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Ninetales Pokemon Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.68 -> 7.18 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/manipulating search queries; medium risk for a NewTab extension.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; low blast radius.
• chrome_url_overrides.newtab medium Replaces new-tab page; prime surface for ad-monetization and search hijack.

Pillar Scores

Bookkeeping