Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Grateful Knight Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab — high-reach monetization/tracking surface.
• Uninstall and install URL hijacks redirect to gameograf.com with UTM tracking on every install/uninstall.
• No CSP declared (MV3 default only); dom_sink_innerhtml in popup.js and calendar.js raises DOM-XSS risk.
• Developer name field empty; low install count (22) with verified publisher reduces but doesn't eliminate concern.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html — replaces every new-tab page for all 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
• dom_sink_innerhtml crx innerHTML from variable in js/popup.js and js/calendar.js; no CSP to mitigate XSS.
• no_csp manifest content_security_policy is null; csp_present=false — MV3 default only, no explicit hardening.
• verified_publisher store gameograf.com resolves, looks_throwaway=false, verified_publisher=true — partial trust signal.
• privacy_policy_third_party api Policy fetched; scope_extension=true, data_collection=true, third_party_sharing=true, retention=true.
• js_external_hosts crx 12 external JS hosts including api.gameograf.com, google.com properties, chat.openai.com.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Grateful Knight Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 3.02 -> 5.52 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying search engine settings; medium risk standalone.
• chrome_url_overrides.newtab high Replaces new-tab page; primary monetization/tracking surface for this category.
• host_permissions: https://api.gameograf.com/* low Scoped to own API domain; low breadth but enables data exfil to dev server.

Pillar Scores

Bookkeeping