Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Christmas Tree in Town Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override combined with 'search' permission creates strong monetization/search-hijack surface.
• Uninstall and install URL hijack — both redirect to gameograf.com with tracking params.
• No CSP declared (MV3 default applies but no explicit policy); innerHTML sinks present in popup and calendar JS.
• Missing developer name in store listing reduces accountability.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — full new-tab page replacement.
• uninstall_url_hijack crx setUninstallURL targets https://gameograf.com with utm tracking params.
• install_url_hijack crx onInstalled opens https://gameograf.com with utm tracking params.
• search_permission manifest Declared 'search' permission alongside newtab override — search-monetization pattern.
• dom_sink_innerhtml crx Two innerHTML sinks found in popup.js and calendar.js; no CSP to mitigate XSS.
• no_developer_name store developer_name field is empty — reduced accountability signal.
• verified_publisher store Verified publisher badge present; domain resolves; not throwaway.
• privacy_policy api Policy fetched, scoped to extension, discloses collection/retention/3rd-party sharing.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Christmas Tree in Town Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.41 -> 6.91 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading search terms; paired with newtab override raises monetization risk.
• host_permissions: https://api.gameograf.com/* low Scoped to dev-controlled API domain only; no broad host access.
• chrome_url_overrides.newtab medium Replaces new-tab page; primary monetization vector for this category.

Pillar Scores

Bookkeeping