Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Nissan GT-R R35 Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab with developer-controlled content — high-reach monetization surface.
• Privacy policy is Google's generic policy (not scoped to this extension) but admits data collection and 3rd-party sharing.
• Uninstall and install URL hijacks redirect to gameograf.com with UTM tracking — monetization shell pattern.
• No CSP defined; innerHTML sinks in popup.js and calendar.js create DOM-XSS risk.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html — every new tab controlled by developer.
• uninstall_url_hijack crx setUninstallURL targets https://gameograf.com/?utm_source=gameograf — 3rd-party UTM redirect.
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install — monetization redirect on install.
• generic_privacy_policy api Privacy URL is Google's own policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• no_csp manifest content_security_policy is null; MV3 default applies but no explicit restriction tightened.
• dom_xss_sinks crx innerHTML from variable in js/popup.js and js/calendar.js with no CSP guard.
• no_developer_name store developer_name is empty string; reduces accountability.
• verified_publisher store verified_publisher=true on gameograf.com which resolves and is not throwaway.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Nissan GT-R R35 Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.52 -> 7.02 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying/modifying search provider; paired with newtab override raises monetization concern.
• 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 — high-reach surface for monetization or data capture.

Pillar Scores

Bookkeeping