Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Sad Lofi Cyberpunk Girl Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy URL is a generic Google policy that failed to fetch — effectively no extension-scoped policy.
• New-tab override combined with both install and uninstall URL hijacks signals monetization shell pattern.
• Uninstall URL hijack to gameograf.com tracks user churn via UTM params.
• Two unguarded innerHTML sinks (popup.js, calendar.js) with no CSP — DOM-XSS exposure.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — full new-tab page replacement.
• 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
• privacy_policy_fetch_failed api Policy URL is Google account page; fetch returned ConnectionError — no extension-scoped policy.
• dom_xss_sinks crx innerHTML used with variable input in popup.js and calendar.js; no CSP present.
• no_csp manifest content_security_policy is null — no CSP protection despite DOM sinks.
• no_developer_name store developer_name is empty string; verified publisher badge but no display name.
• verified_publisher store verified_publisher=true; domain gameograf.com resolves and is not throwaway.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Sad Lofi Cyberpunk Girl Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.43 -> 6.93 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/setting search provider; medium risk for a NewTab extension.
• host_permissions: https://api.gameograf.com/* medium Scoped to developer's own API domain; acceptable but enables data exfil.
• chrome_url_overrides.newtab medium Replaces new-tab page — core monetization and tracking surface.

Pillar Scores

Bookkeeping