Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Luffy's Summer Break Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab page with developer-controlled content (high reach).
• Uninstall and install URL hijacking redirect to gameograf.com tracking URLs.
• No CSP defined (MV3 default applies but csp_present=false); innerHTML sinks raise DOM-XSS risk.
• No developer name listed despite verified-publisher status; transparency gap.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html; every new tab hijacked.
• 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
• dom_xss_sinks crx innerHTML assigned from variables in popup.js and calendar.js; no CSP guard.
• verified_publisher store Verified publisher badge present; domain resolves; privacy policy scoped.
• external_hosts crx JS references 12 external hosts including api.gameograf.com and chat.openai.com.
• privacy_policy_classification api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• low_installs store Only 18 installs; no ratings; tail attack surface but install_perm_anomaly=false.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Luffy's Summer Break Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 2.75 -> 5.25 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying search provider; medium risk for a NewTab extension.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; acceptable for a NewTab fetching content.
• chrome_url_overrides.newtab medium Replaces every new tab page — high reach, but declared function matches.

Pillar Scores

Bookkeeping