Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Nezuko Kamado Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab with developer-controlled page — persistent monetization surface.
• Uninstall URL hijack redirects to gameograf.com UTM tracking on removal.
• Install URL hijack opens gameograf.com on install with UTM tracking.
• No CSP declared (MV3) — innerHTML DOM-XSS sinks in popup.js and calendar.js without CSP protection.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html — replaces every new tab page.
• 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=lofi&utm_medium=install
• no_csp manifest content_security_policy is null; MV3 default applies but innerHTML sinks present increase XSS risk.
• dom_xss_sinks crx innerHTML assignments from variables in popup.js and calendar.js — DOM-XSS sinks, no CSP.
• developer_name_missing store developer_name is empty string despite verified_publisher == true.
• privacy_policy api Policy fetched; scoped, data_collection+retention+third_party_sharing all true — adequate but sharing present.
• verified_publisher store verified_publisher == true; domain resolves, not throwaway — partial trust credit applied.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Nezuko Kamado Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 2.81 -> 5.31 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying search provider; medium risk when paired with newtab override.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; low blast radius.
• chrome_url_overrides.newtab medium Replaces every new tab; persistent high-reach surface for monetization or redirect.

Pillar Scores

Bookkeeping