Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Demon Slayer Infinity Castle Gameograf [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab; combined with uninstall/install URL hijacks signals monetization shell pattern.
• Uninstall URL hijack (+3.0) and install URL hijack (+2.0) are strong webstore monetization signals.
• Two innerHTML DOM-XSS sinks without CSP raise code quality risk; csp_present=false amplifies.
• No developer name listed; verified publisher but missing 'Offered by' identity increases reputation uncertainty.

Evidence

• uninstall_url_hijack manifest setUninstallURL → gameograf.com with UTM tracking; strong monetization indicator (+3.0 webstore).
• install_url_hijack manifest onInstalled opens gameograf.com with UTM tracking; monetization shell signal (+2.0 webstore).
• chrome_url_overrides.newtab manifest Extension replaces every new-tab page via newtab.html; high-reach surface.
• dom_sink_innerhtml_userctrl crx Two innerHTML XSS sinks in popup.js and calendar.js; no CSP to mitigate.
• csp_present=false manifest No content_security_policy declared on MV3 extension; amplifies DOM-XSS risk.
• no_developer_name store developer_name is empty string; verified publisher badge partially offsets but identity unclear.
• privacy_policy_classification api Policy scoped, data_collection+retention+third_party_sharing all true; adequate but sharing disclosed.
• verified_publisher store Verified publisher badge present; domain resolves, not throwaway, no bad hosts.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Demon Slayer Infinity Castle Gameograf [adware] + malext.io malicious_extension_sentry; score 4.09 -> 6.59 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Can intercept or override search queries; medium risk on its own.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides.newtab medium Replaces every new-tab page; high-reach surface for monetization or redirect.

Pillar Scores

Bookkeeping