Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Kuromi Cheeky but Charming live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override captures all new-tab navigations for a theme/wallpaper extension — classic monetization shell.
• Uninstall and install URL hijack both fire to gameograf.com tracking URLs.
• No CSP declared (MV3 default) combined with innerHTML DOM-XSS sinks in popup.js and calendar.js.
• search permission paired with newtab override creates search-provider control surface.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces all new tab pages.
• uninstall_url_hijack crx chrome.runtime.setUninstallURL targets https://gameograf.com/?utm_source=extension&utm_medium=install
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=extension&utm_medium=install
• dom_xss_sink crx innerHTML assigned from variable in js/popup.js and js/calendar.js with no CSP guard.
• no_csp manifest content_security_policy is null; MV3 default applies but no explicit script restriction.
• search_permission manifest search permission declared alongside newtab override — combined search control risk.
• privacy_policy_scope api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• low_installs_newtab store Only 33 installs for a newtab extension — tail-attack-surface per anomaly check.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Kuromi Cheeky but Charming live Wallpaper [adware] + malext.io malicious_extension_sentry; score 3.10 -> 5.60 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding search provider; medium risk for search hijacking.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain only.
• chrome_url_overrides.newtab medium Replaces new tab page — classic monetization surface, captures all new-tab traffic.

Pillar Scores

Bookkeeping