Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Spider-Man Marvel Rivals Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override + uninstall/install URL hijack to gameograf.com — persistent monetization surface on every new tab.
• Uninstall URL hijack and install URL hijack both confirmed; standard traffic-monetization pattern.
• Two innerHTML DOM-XSS sinks with no CSP present; if API data is attacker-controlled this escalates.
• No developer name listed; verified publisher but 'Offered by' field blank reduces accountability.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html; replaces every new tab permanently.
• uninstall_url_hijack crx setUninstallURL → https://gameograf.com/?utm_source=gameograf&utm_campaign=bg&utm_content=uninstall
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install&utm_campaign=bg&utm_content=install
• no_csp manifest content_security_policy is null (MV3 default applies but no explicit extension CSP set).
• dom_xss_sink crx innerHTML sinks in popup.js and calendar.js with no CSP guard; DOM-XSS risk from API data.
• verified_publisher store gameograf.com verified publisher; domain resolves and not throwaway.
• privacy_policy api Policy fetched, scoped, discloses collection/retention/third-party sharing — adequate.
• fan_content_shell store Spider-Man / Marvel IP in title with gameograf.com dev; fan-content theme shell pattern.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Spider-Man Marvel Rivals Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 3.08 -> 5.58 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying/overriding search; medium risk in a NewTab extension.
• host_permission: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides.newtab medium Replaces new-tab page; monetization vector and persistent reach.

Pillar Scores

Bookkeeping