Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Cozy Winter Cabin Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab; installs+uninstall URL hijacks indicate monetization shell pattern.
• Uninstall and install URL hijacks redirect to gameograf.com with UTM tracking on every install/uninstall.
• No CSP declared (MV3 but csp_present==false); dom_sink_innerhtml_userctrl in calendar.js raises DOM-XSS risk.
• Developer name missing; no 'Offered by' display name reduces accountability.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab page for all users.
• uninstall_url_hijack crx setUninstallURL targets https://gameograf.com/?p=32968?utm_source=extension&utm_medium=uninstall
• install_url_hijack crx onInstalled opens https://gameograf.com/?p=32968?utm_source=extension&utm_medium=install
• no_csp manifest content_security_policy is null; csp_present==false on MV3 extension with innerHTML sink.
• dom_xss_sink crx js/calendar.js: gridEl.innerHTML = html — uncontrolled DOM sink, no CSP mitigation.
• developer_name_missing store developer_name is empty string; no 'Offered by' identity visible to users.
• verified_publisher store verified_publisher==true; provides partial accountability but does not offset monetization signals.
• privacy_policy_scope api Policy fetched; scope_extension=true, data_collection=true, third_party_sharing=true, retention=true.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Cozy Winter Cabin Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 2.86 -> 5.36 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying/overriding search; medium risk in newtab context.
• alarms low Schedules periodic tasks; low standalone risk.
• storage low Local key-value storage; low risk.
• host_permissions: https://api.gameograf.com/* medium Scoped to dev's own API domain; enables data exfil to controlled endpoint.
• chrome_url_overrides.newtab medium Replaces every new tab page; high-visibility surface for monetization.

Pillar Scores

Bookkeeping