Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Aquarium Live Wallpaper Theme [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with uninstall+install URL hijack — traffic monetization pattern.
• No CSP declared (MV3 default applies but no explicit policy); innerHTML sinks in popup.js and calendar.js.
• Developer name missing; no 'Offered by' identity on storefront.
• Uninstall URL redirect to gameograf.com with UTM tracking confirms monetization intent.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab for 158 users.
• 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
• no_developer_name store developer_name is empty string; no 'Offered by' identity visible.
• dom_xss_sinks crx innerHTML assigned from variables in popup.js and calendar.js; no CSP to mitigate.
• search_permission_newtab manifest 'search' permission + newtab override = full search capture capability.
• privacy_policy_scoped api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• verified_publisher store verified_publisher=true; developer domain resolves, not throwaway.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Aquarium Live Wallpaper Theme [adware] + malext.io malicious_extension_sentry; score 2.93 -> 5.43 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding search provider; medium risk for a NewTab extension.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; consistent with stated function.
• chrome_url_overrides.newtab medium Replaces new-tab page; core surface for monetization or data collection.

Pillar Scores

Bookkeeping